25mm od x 10mm id x 5mm thick N35 Neodymium Ring Magnets Circular Strong Rare Earth Ring Magnets

• Dimensions: 25 mm out diameter x 10 mm in diameter x 5 mm thick
• Magnets Type: Permanent
• Material: NdFeB, Neodymium
• Grade: N35
• Plating / Coating: Ni-Cu-Ni (Nickel-plated)
• Magnetization Direction: Axial(Poles on Flat Ends)
• Weight: 15.67 g/piece
• Hole type: single ring hole
• Max Operating Temp: 176ºF (80ºC)
• Pull Force:  approx. 2.91 kg
• Surface Field: 2746 Gauss

The d25xd10x5mm 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.