By Grade
NEODYMIUM IRON BORON MAGNETS – Magnet Grade
Magnet Grade – Known as third generation of Rare Earth magnets, Neodymium Iron Boron (NdFeB) magnets are the most powerful and advanced commercialized permanent magnet today. Since they are made from Neodymium, one of the most plentiful rare earth elements, and inexpensive iron, NdFeB magnets offer the best value in cost and performance.
Sintered NdFeB Magnets By Grade
NdFeB magnets are available in both sintered and bonded forms. Sintered NdFeB offers the highest magnetic properties (28 MGOe to 50 MGOe) while Bonded NdFeB offers lower energy properties. Although bonded magnets do not possess magnetic properties as advanced as those of sintered magnets, they can be made in shapes and sizes that are difficult to achieve with sintering.
A variety of coatings can be applied to the magnets’ surface to overcome the principle drawback of neodymium-based magnets, their tendency to corrode easily.
Neodymium Magnet Grade: N27-N52, 30M-50M, 30H-48H, 30SH-45SH, 28UH-40UH, 28EH-38EH, 28AH~35AH;
Sintered NdFeB Magnets By Grade
Typical Magnetic Properties / Magnet Grade
Grade | Max. Energy Product | Remanence | Coercive Force | Rev. Temp. Coeff. | Curie Temp. | Max. Working Temp. | ||||||
(BH)max | Br | Hc | Hci | Bd | Hd | Tc | Tw | |||||
MGOe | kJ/m3 | kG | mT | kOe | kA/m | kOe | kA/m | %/°C | %/°C | °C | °C | |
N27 | 25-29 | 199-231 | 10.50 | 1050 | >10.0 | >796 | >12.0 | >955 | -0.12 | -0.60 | 310 | 80 |
N30 | 28-31 | 223-247 | 11.00 | 1100 | >10.2 | >812 | >12.0 | >955 | -0.12 | -0.60 | 310 | 80 |
N33 | 31-33 | 247-263 | 11.50 | 1150 | >10.5 | >836 | >12.0 | >955 | -0.12 | -0.60 | 310 | 80 |
N35 | 33-36 | 263-287 | 12.00 | 1200 | >10.9 | >868 | >12.0 | >955 | -0.12 | -0.60 | 310 | 80 |
N38 | 36-39 | 287-310 | 12.40 | 1240 | >11.3 | >899 | >12.0 | >955 | -0.12 | -0.60 | 310 | 80 |
N40 | 38-41 | 302-326 | 12.70 | 1270 | >11.4 | >907 | >12.0 | >955 | -0.12 | -0.60 | 310 | 80 |
N42 | 40-43 | 318-342 | 13.00 | 1300 | >11.5 | >915 | >12.0 | >955 | -0.12 | -0.60 | 310 | 80 |
N45 | 43-46 | 342-366 | 13.50 | 1350 | >11.6 | >923 | >12.0 | >955 | -0.12 | -0.60 | 310 | 80 |
N48 | 46-49 | 366-390 | 14.00 | 1400 | >11.6 | >923 | >12.0 | >955 | -0.12 | -0.60 | 310 | 80 |
N50 | 48-51 | 382-406 | 14.30 | 1430 | >10.3 | >820 | >12.0 | >955 | -0.12 | -0.60 | 310 | 80 |
N52 | 50-53 | 398-422 | 14.50 | 1450 | >10.3 | >820 | >11.0 | >877 | -0.12 | -0.60 | 310 | 80 |
N30M | 28-31 | 223-247 | 11.00 | 1100 | >10.2 | >812 | >14.0 | >1114 | -0.12 | -0.59 | 320 | 100 |
N33M | 31-33 | 247-263 | 11.50 | 1150 | >10.5 | >836 | >14.0 | >1114 | -0.12 | -0.59 | 320 | 100 |
N35M | 33-36 | 263-287 | 12.00 | 1200 | >10.9 | >868 | >14.0 | >1114 | -0.12 | -0.59 | 320 | 100 |
N38M | 36-39 | 287-310 | 12.40 | 1240 | >11.4 | >907 | >14.0 | >1114 | -0.12 | -0.59 | 320 | 100 |
N40M | 38-41 | 302-326 | 12.70 | 1270 | >11.6 | >923 | >14.0 | >1114 | -0.12 | -0.59 | 320 | 100 |
N42M | 40-43 | 318-342 | 13.00 | 1300 | >12.0 | >955 | >14.0 | >1114 | -0.12 | -0.59 | 320 | 100 |
N45M | 43-46 | 342-366 | 13.50 | 1350 | >12.5 | >995 | >14.0 | >1114 | -0.12 | -0.59 | 320 | 100 |
N48M | 46-49 | 366-390 | 14.00 | 1400 | >12.9 | >1027 | >14.0 | >1114 | -0.12 | -0.59 | 320 | 100 |
N50M | 48-51 | 382-406 | 14.30 | 1430 | >13.1 | >1043 | >14.0 | >1114 | -0.11 | -0.58 | 320-350 | 100 |
N30H | 28-31 | 223-247 | 11.00 | 1100 | >10.2 | >812 | >17.0 | >1353 | -0.11 | -0.58 | 320-350 | 120 |
N33H | 31-34 | 247-271 | 11.50 | 1150 | >10.5 | >836 | >17.0 | >1353 | -0.11 | -0.58 | 320-350 | 120 |
N35H | 33-36 | 263-287 | 12.00 | 1200 | >10.9 | >868 | >17.0 | >1353 | -0.11 | -0.58 | 320-350 | 120 |
N38H | 36-39 | 287-310 | 12.40 | 1240 | >11.4 | >907 | >17.0 | >1353 | -0.11 | -0.58 | 320-350 | 120 |
N40H | 38-41 | 302-326 | 12.70 | 1270 | >11.6 | >923 | >17.0 | >1353 | -0.11 | -0.58 | 320-350 | 120 |
N42H | 40-43 | 318-342 | 13.00 | 1300 | >12.0 | >955 | >17.0 | >1353 | -0.11 | -0.58 | 320-350 | 120 |
N45H | 43-46 | 342-366 | 13.50 | 1350 | >12.5 | >999 | >17.0 | >1353 | -0.11 | -0.58 | 320-350 | 120 |
N48H | 46-49 | 366-390 | 14.00 | 1400 | >12.9 | >1027 | >17.0 | >1353 | -0.11 | -0.55 | 340-360 | 120 |
N30SH | 28-31 | 223-247 | 11.00 | 1100 | >10.2 | >812 | >20.0 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
N33SH | 31-34 | 247-271 | 11.50 | 1150 | >10.6 | >844 | >20.0 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
N35SH | 33-36 | 263-287 | 12.00 | 1200 | >11.0 | >876 | >20.0 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
N38SH | 36-39 | 287-310 | 12.40 | 1240 | >11.4 | >907 | >20.0 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
N40SH | 38-41 | 302-326 | 12.70 | 1270 | >11.8 | >939 | >20.0 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
N42SH | 40-43 | 318-342 | 13.00 | 1300 | >12.4 | >987 | >20.0 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
N45SH | 43-46 | 342-366 | 13.50 | 1350 | >12.6 | >1003 | >20.0 | >1592 | -0.11 | -0.51 | 350-380 | 150 |
N28UH | 26-29 | 207-231 | 10.60 | 1060 | >9.6 | >764 | >25.0 | >1990 | -0.11 | -0.51 | 350-380 | 180 |
N30UH | 28-31 | 223-247 | 11.00 | 1100 | >10.2 | >812 | >25.0 | >1990 | -0.11 | -0.51 | 350-380 | 180 |
N33UH | 31-34 | 247-271 | 11.50 | 1150 | >10.8 | >860 | >25.0 | >1990 | -0.11 | -0.51 | 350-380 | 180 |
N35UH | 33-36 | 263-287 | 12.00 | 1200 | >11.3 | >899 | >25.0 | >1990 | -0.11 | -0.51 | 350-380 | 180 |
N38UH | 36-39 | 287-310 | 12.40 | 1240 | >11.5 | >915 | >25.0 | >1990 | -0.11 | -0.51 | 350-380 | 180 |
N40UH | 38-41 | 302-326 | 12.70 | 1270 | >11.8 | >939 | >25.0 | >1990 | -0.11 | -0.51 | 350-380 | 180 |
N28EH | 26-29 | 207-231 | 10.70 | 1070 | >9.8 | >780 | >30.0 | >2388 | -0.11 | -0.51 | 350-380 | 200 |
N30EH | 28-31 | 223-247 | 11.10 | 1110 | >10.2 | >812 | >30.0 | >2388 | -0.11 | -0.51 | 350-380 | 200 |
N33EH | 31-34 | 227-271 | 11.50 | 1150 | >10.8 | >860 | >30.0 | >2388 | -0.11 | -0.51 | 350-380 | 200 |
N35EH | 33-36 | 263-287 | 12.00 | 1200 | >11.1 | >884 | >30.0 | >2388 | -0.11 | -0.51 | 350-380 | 200 |
N38EH | 36-39 | 287-310 | 12.40 | 1240 | >11.5 | >915 | >30.0 | >2388 | -0.11 | -0.51 | 350-380 | 200 |
N28AH | 26-29 | 207-231 | 10.70 | 1070 | >9.8 | >780 | >35.0 | >2786 | -0.11 | -0.51 | 350-380 | 220 |
N30AH | 28-31 | 223-247 | 11.10 | 1110 | >10.2 | >812 | >35.0 | >2786 | -0.11 | -0.51 | 350-380 | 220 |
N33AH | 31-34 | 227-271 | 11.50 | 1150 | >10.8 | >860 | >35.0 | >2786 | -0.11 | -0.51 | 350-380 | 220 |
N35AH | 33-36 | 263-287 | 12.00 | 1200 | >11.1 | >884 | >35.0 | >2786 | -0.11 | -0.51 | 350-380 | 220 |
60MM Diameter Double Sided Neodymium Metal Detecting Magnet
60MM Diameter Double Sided Neodymium Metal Detecting Magnet, 660LBS 300KG Super Strong Neodymium Recovery Magnet, NdFeB Salvage Fishing Magnet Recover Detect Hunter Metal Treasure w/ Countersunk Hole Eyebolt, Recover Detect Hunter Metal Treasure pot magnets China supplier 60MM Diameter Double Sided Neodymium Metal Detecting Magnet with M8 Eyebolts Item No. MPSM-FM660 series Specifications Color: silver […]
300KG Double Sided Neodymium Salvage Magnet with M8 Eyebolts
300KG Double Sided Neodymium Salvage Magnet with M8 Eyebolts, Double Ways Super Strong Neodymium Double Sided Recovery Magnet for Magnet Fishing Salvage Treasure Hunting Underwater Retrieving w/ Countersunk Hole Eyebolt, Recover Detect Hunter Metal Treasure pot magnets China supplier 300KG Double Sided Neodymium Salvage Magnet with M8 Eyebolts Item No. MPSM-FM660 series Specifications Color: silver […]
660lb Pull 2 Eyebolts Neodymium Salvage Fishing Magnet Kit
660lb Pull 2 Eyebolts Neodymium Salvage Fishing Magnet Kit, Double Ways Super Strong Neodymium Double Sided Recovery Magnet for Magnet Fishing Salvage Treasure Hunting Underwater Retrieving w/ Countersunk Hole Eyebolt, Recover Detect Hunter Metal Treasure pot magnets China supplier 660lb Pull 2 Eyebolts Neodymium Salvage Fishing Magnet Kit Item No. MPSM-FM660 series Specifications Color: silver […]
Double Way Neodymium Magnetic Fishing Eyebolt 300kg
Double Way Neodymium Magnetic Fishing Eyebolt 300kg, 660lb Pull Force Large Super Strong Neodymium Double Sided Recovery Magnet for Magnet Fishing Treasure Hunting Underwater Retrieving w/ Countersunk Hole Eyebolt, Underwater treasure hunting pot magnets China supplier Double Way Neodymium Magnetic Fishing Eyebolt 300kg Item No. MPSM-FM660 series Specifications Color: silver Magnet diameter: 60mm Magnet thickness: […]
Fishing Magnets Kit 660LBS with 65Ft Rope Outdoor Grappling Hook Glove Carabiner
Fishing Magnets Kit 660LBS with 65Ft Rope Outdoor Grappling Hook Glove Carabiner, 300kgs Pull Force Large Super Strong Neodymium Double Sided Recovery Magnet for Magnet Fishing Treasure Hunting Underwater Retrieving w/ Countersunk Hole Eyebolt, Underwater treasure hunting pot magnets China supplier Fishing Magnets Kit 660LBS with 65Ft Rope Outdoor Grappling Hook Glove Carabiner Item No. […]
Neodymium Double Sided Fishing and Retrieving Magnet in River Sea
Neodymium Double Sided Fishing and Retrieving Magnet in River Sea, 300kg Fishing Magnets Kit 660LBS with 65Ft Rope Outdoor Grappling Hook Glove Carabiner Large Super Strong Neodymium Double Sided Recovery Magnet for Magnet Fishing Treasure Hunting Underwater Retrieving w/ Countersunk Hole Eyebolt, Underwater treasure hunting pot magnets China supplier Neodymium Double Sided Fishing and Retrieving […]
660LB Fishing Magnet with 110ft Rope & Glove
660LB Fishing Magnet with 110ft Rope & Glove, 300kg Underwater Treasure Hunting Magnet Lifting w/ Countersunk Hole Eyebolt, Two Way Ndfeb Scrap Salvaging Magnet with M10 Eyebolt, Recovery Holding Lifting Magnets, Ring Pot Round Neodymium Magnet with Eyebolt and Rope for River or Lake Fishing, Underwater treasure hunting magnets China supplier 660LB Fishing Magnet with […]
115KG Underwater Treasure Hunting Magnet Lifting
115KG Underwater Treasure Hunting Magnet Lifting w/ Countersunk Hole Eyebolt, One Way Ndfeb Scrap Salvaging Magnet with M10 Eyebolt, Recovery Holding Lifting Magnets, Ring Pot Round Neodymium Magnet with Eyebolt and Rope for River or Lake Fishing, Underwater treasure hunting magnets China supplier 115KG Underwater Treasure Hunting Magnet Lifting Item No. MPSM-FM225 series Specifications: ●Magnet […]
255LBS Round Magnet Fishing Diameter 60mm with Nylon Paracord Rope
255LBS Round Magnet Fishing Diameter 60mm with Nylon Paracord Rope and Countersunk Hole Eyebolt, One Way Ndfeb Salvaging Magnet with M10 Eyebolt, Recovery Holding Magnets, Ring Pot Round Neodymium Magnet with Eyebolt and Rope for River or Lake Fishing, Underwater treasure hunting magnets China supplier 255LBS Round Magnet Fishing Diameter 60mm with Nylon Paracord Rope […]
Super Strong Retrieving Treasure Hunt Magnet 255lbs Pull Force
Super Strong Retrieving Treasure Hunt Magnet 255lbs Pull Force with Countersunk Hole Eyebolt, One Way Ndfeb Salvaging Magnet with M10 Eyebolt, Recovery Holding Magnets, Ring Pot Round Neodymium Magnet with Eyebolt and Rope- Magnet for River or Lake Fishing, Underwater treasure hunting magnets China supplier Super Strong Retrieving Treasure Hunt Magnet 255lbs Pull Force with […]
255LBS Pulling Force Neodymium Fishing Magnets with Countersunk Hole Eyebolt
255LBS Pulling Force Neodymium Fishing Magnets with Countersunk Hole Eyebolt, One Way Ndfeb Salvaging Magnet with M10 Eyebolt, Recovery Holding Magnets, Ring Pot Round Neodymium Magnet with Eyebolt and Rope- Magnet for River or Lake Fishing, Underwater treasure hunting magnets China supplier 255LBS Pulling Force Neodymium Fishing Magnets with Countersunk Hole Eyebolt Item No. MPSM-FM225 […]
Monopole Circle Round Single Pole Neodymium Magnets
Monopole Circle Round Single Pole Neodymium Magnets, Rare Earth NdFeB Single Sided Magnets, One-Pole Sintered Neodymium Disc Permanent Magnets for Leather case bag, magnetic box, gift box, cover box, pacakge box and jewelry box, Super Strong Rare Earth Round Monopolar Neo Magnet Supplier, Custom Single Pole Monopole Magnet for Sale Monopole Circle Round Single Pole […]
Circle Neodymium Single Pole Jewelry Box Magnets
Circle Neodymium Single Pole Jewelry Box Magnets, Rare Earth NdFeB Single Sided Magnets, One-Pole Sintered Neodymium Disc Permanent Magnets for Leather case bag, magnetic box, gift box, cover box, pacakge box and jewelry box, Super Strong Rare Earth Round Monopolar Neo Magnet Supplier, Custom Single Pole Monopole Magnet for Sale Circle Neodymium Single Pole Jewelry […]
N38 Disc Circular Neodymium One Pole Magnets
N38 Disc Circular Neodymium One Pole Magnets for Boxes, Rare Earth NdFeB Single Sided Magnets, Mono-Pole Magnetization Sintered Neodymium Disc Permanent Magnets for Leather case bag, magnetic box, gift box, cover box, pacakge box and jewelry box, Super Strong Rare Earth Round Monopolar Neo Magnet Supplier, Custom Single Pole Monopole Magnet for Sale N38 Disc […]
Round Circular Monopole Neodymium Magnets for Boxes
Round Circular Monopole Neodymium Magnets for Boxes, Rare Earth NdFeB Single Sided Magnets, Mono-Pole Magnetization Sintered Neodymium Disc Permanent Magnets for Leather case bag, magnetic box, gift box, cover box, pacakge box and jewelry box, Super Strong Rare Earth Round Monopolar Neo Magnet Supplier, Custom Single Pole Monopole Magnet for Sale Round Circular Monopole Neodymium […]
Tiny Neodymium Monoploar Disc Magnet for Gift Box
Tiny Neodymium Monoploar Disc Magnet for Gift Box, Rare Earth NdFeB Single Sided Magnets, Mono-Pole Magnetization Sintered Neodymium Disc Permanent Magnets for Leather case bag, magnetic box, gift box, cover box, pacakge box and jewelry box, Super Strong Rare Earth Round Monopolar Neo Magnet Supplier, Custom Single Pole Monopole Magnet for Sale Tiny Neodymium Monoploar […]
Small NdFeB Monoploar Magnets for Case Bag Box
Small NdFeB Monoploar Magnets for Case Bag Box, Rare Earth NdFeB Single Sided Magnets, Mono-Pole Magnetization Sintered Neodymium Disc Permanent Magnets for Leather case bag, magnetic box, gift box, cover box, pacakge box and jewelry box, Super Strong Rare Earth Round Monopolar Neo Magnet Supplier, Custom Single Pole Monopole Magnet for Sale Small NdFeB Monoploar […]
Permanent NdFeB Monoploar Pacakge Box Magnet
Permanent NdFeB Monoploar Pacakge Box Magnet, Holster Sleep Magnet, Rare Earth NdFeB Single Sided Magnets, Mono-Pole Magnetization Sintered Neodymium Disc Permanent Magnets for Leather case bag, magnetic box, gift box, cover box, pacakge box and jewelry box, Super Strong Rare Earth Round Monopolar Neo Magnet Supplier, Custom Single Pole Monopole Magnet for Sale Permanent NdFeB […]
Strong N35 NdFeB Monopole Permanent Gift Box Magnets
Strong N35 NdFeB Monopole Permanent Gift Box Magnets, Holster Sleep Magnet, Rare Earth NdFeB Single Sided Magnets, Mono-Pole Magnetization Sintered Neodymium Disc Permanent Magnets for Leather case bag, magnetic box, gift box, cover box, pacakge box and jewelry box, Super Strong Rare Earth Round Monopolar Magnet Supplier, Custom Single Pole Monopole Magnet for Sale Strong […]
Permanent Neodymium Monopole Magnet Wholesale Price
Permanent Neodymium Monopole Magnet Wholesale Price, Holster Sleep Magnet, Rare Earth NdFeB Single Sided Magnets, Mono-Pole Magnetization Sintered Neodymium Disc Permanent Magnets for magnetic box, gift box, cover box, pacakge box and jewelry box, Super Strong Rare Earth Round Monopolar Magnet for Projects, Custom Single Pole Monopole Magnet for Sale Permanent Neodymium Monopole Magnet Wholesale […]
Ultra-thin One-Pole Neodymium Magnets
12*1mm 13*1mm Ultra-thin One-Pole Neodymium Magnets, Holster Sleep Magnet, Rare Earth NdFeB Single Sided Magnets, Mono-Pole Magnetization Sintered Neodymium Disc Permanent Magnets for magnetic box, gift box, cover box, pacakge box and jewelry box, Super Strong Rare Earth Round Monopolar Magnet for Projects, Custom Single Pole Monopole Magnet for Sale 12*1mm 13*1mm Ultra-thin One-Pole Neodymium […]
Rare Earth Free Magnets Neodymium Disc Single Pole Magnet
Rare Earth Free Magnets Neodymium Disc Single Pole Magnet, One-pole Holster Sleep Magnet, Rare Earth NdFeB Single Sided Magnets, Mono-Pole Magnetization Sintered Neodymium Disc Permanent Magnets for magnetic box, gift box, cover box, pacakge box and jewelry box, Super Strong Rare Earth Round Monopolar Magnet for Projects, Custom Single Pole Monopole Magnet for Sale Rare […]
Quality Performance Neo Single-sided Monopolar Magnet
Quality Performance Neo Single-sided Monopolar Magnet, Disc One-pole Holster Sleep Magnet, Rare Earth NdFeB Single Side Magnets, Mono-Pole Magnetization Sintered Neodymium Disc Permanent Magnets, Super Strong Rare Earth Round Monopolar Magnet for Projects, Custom Single Pole Monopole Magnet for Sale Quality Performance Neo Single-sided Monopolar Magnet Specification: 100% Brand New Top Quality Neodymium Iron Boron […]
Neo Disc One-pole Holster Sleep Magnet
Neo Disc One-pole Holster Sleep Magnet, Rare Earth NdFeB Single Sided Round Magnets, Mono-Pole Magnetization Sintered Neodymium Disc Permanent Magnets, Super Strong Rare Earth Round Monopolar Magnet for Projects, Custom Single Pole Monopole Magnet for Sale Neo Disc One-pole Holster Sleep Magnet Specification: 100% Brand New Top Quality Neodymium Iron Boron (NDFeB) Rare Earth Magnets. […]
Customized Disk Disc Single Pole Neodymium Magnet
Customized Disk Disc Single Pole Neodymium Magnet, Rare Earth Nd-Fe-B Single Sided Round Magnets, One-Pole Magnetization Sintering Neodymium Disc Permanent Magnets, Super Strong Rare Earth Round Monopolar Magnet for Projects, Custom Single Pole Monopole Magnet for Sale Customized Disk Disc Single Pole Neodymium Magnet Specification: 100% Brand New Top Quality Neodymium Iron Boron (NDFeB) Rare […]
Neodymium Round Disc Monopole Magnet 10mm 12mm Diameter
Neodymium Round Disc Monopole Magnet 10mm 12mm Diameter, Rare Earth Nd-Fe-B Single Sided Magnets, One-Pole Radial Oriented Magnetization Sintering Neodymium Disk Permanent Magnets, Super Strong Rare Earth Round Monopolar Magnet for Projects, Custom Single Pole Monopole Magnet for Sale Neodymium Round Disc Monopole Magnet 10mm 12mm Diameter Specification: 100% Brand New Top Quality Neodymium Iron […]
Rare Earth Nd-Fe-B Single Sided Magnets
Rare Earth Nd-Fe-B Single Sided Magnets, One-Pole Radial Oriented Magnetization Sintering Neodymium Disc Permanent Magnets, Super Strong Rare Earth Round Monopolar Magnet for Projects, Custom Single Pole Neodymium Monopole Magnet for Sale Rare Earth Nd-Fe-B Single Sided Magnets Specification: 100% Brand New Top Quality Neodymium Iron Boron (NDFeB) Rare Earth Magnets. Magnetic direction: thickness; SGS […]
N45H Neodymium Rare Earth Ring Magnets for E-cig, Vapes, Vaporizers
N45H Neodymium Rare Earth Ring Magnets for E-cig, Vapes, Vaporizers, Ring Electronic Cigarette Magnets for Electrical Appliances, Sintered Neodymium Permanent e-cigarette magnet Smoking devices, high performance Magnet Assembly with Strong Magnets, Electronic Cigarette Compound assemblies magnets, Nd-Fe-B radial ring magnet China Supplier N45H Neodymium Rare Earth Ring Magnets for E-cig, Vapes, Vaporizers Description : Shape […]