Norton® Feed Wheel, Series: 57A, 9 in Wheel Diameter, 4 in Wheel Width, 4 in Hole, 80 Grit, Aluminum Oxide Abrasive, Wheel Type Number: Type 7, 2-Side Recess, 5/8 in Recess Depth, 5-1/2 in Recess Diameter, Plastic Bond, Wheel Hardness: R
| Abrasive Material | : | Aluminum Oxide |
| Bond Type | : | Plastic |
| Grade | : | Medium |
| Recess Depth | : | 5/8 in |
| Recess Diameter | : | 5-1/2 in |
| Recess Type | : | 2-Side |
| Series | : | 57A |
| Wheel Hardness | : | R |
| Wheel Diameter | : | 9 in |
| Wheel Width | : | 4 in |
| Hole Size | : | 4 in |
| Wheel Type Number | : | Type 7 |
| Grit | : | 80 |