All purpose grinding disc for any kind of metal grinding. High performance. Long lasting and fast cutting. Excellent for boat propeller reconditioning. Fibre backing. Hub and retainer nut attachment
| Brand | 3M Marine |
| Box | 20 , 20 , 20 |
| Grade | 40 , 40 , 40 |
| Size | 7" x 7/8" , 7" x 7/8" , 7" x 7/8" |