The d40xd20x3mm 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.
2pcs 40mm od x 20mm id x 3mm thick N35 Neodymium Ring Magnets Circular Ring Magnets
$8.99
| Model ID | R-40-20-03-N |
| Material | NdFeB, Grade N35 |
| Shape | Ring |
| Out Diameter | 40 mm |
| In Diameter | 20 mm mm |
| Thickness | 3 mm |
| Tolerance | +/-0.05mm |
| Coating | Nickel-plated (Ni-Cu-Ni) |
| Magnetisation | Axial (Poles on Flat Ends) |
| Type | Permanent |
| Composite | Neodymium Magnet |
| Max. working temperature | 80°C |
| Application | Industrial Magnet |
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