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| · | A backing on which to put the mineral |
| · | An adhesive bond used to hold the mineral to the backing. |
| · | Flint |
| · | Emery |
| · | Garnet |
| · | Crocus |
| · | Aluminum Oxide |
| · | Silicon Carbide |




| · | Mounted Flap Wheels - Gp1 |
| · | Flap Discs - Gp2 |
| · | Flap Wheels Un-mounted - Gp3 |
| · | Grinding/Radial Wheels - Gp4 |
| · | Flexible Discs - Gp5 |
