30mm od x 20mm id x 10mm thick Neodymium Ring Magnets N35 Strong Large Donut Rare Earth Circular Ring Magnets Sale

• Dimensions: 30mm out diameter x 20mm in diameter x 10mm thick
• Magnetic Face: 30mm diameter
• Magnets Type: Permanent
• Material: ネオジム, Neodymium
• グレード: N35
• Plating/Coating: Ni-Cu-Ni (Nickel-plated)
• Magnetization Direction: アキシャル(Poles on Flat Ends)
• 重量: 29.65 g/piece
• Hole type: single ring hole
• Max Operating Temp: 176ºF (80ºC)
• Surface Field: 4280 ガウス

The d30xd20x10mm thick is a big and strong ring magnet. It can be tied to a rope and used to drag lakes and streams for metal objects. They can also be bolted to the wall or ceiling to hold tools or other objects. Multitudes of uses.