3M™ Hookit™ Blue Abrasive Disc 521U is a paper-backed abrasive disc with excellent performance and cut. It is available in a range of grades and sizes.
| Abrasive Mineral Type | Ceramic Aluminum Oxide |
| Backing Type | Paper |
| Flexible | Yes |
| Grit Grade | 40 |
| Manufacturer Part Number | 7100363664 |
| Sanding Method | Machine |
| VMRS Code | 053010001 |
| Wet or Dry | Dry |
| All Purpose Use | Bodywork Solution, Coating Removal, Deburring, Dent Prepare, Filler Shaping, General Purpose Sanding, Machine Sanding, Orbital Sanding, Paint Removal, Paint Stripping, Random Orbital Sanding, Strip Paint to Metal, Surface Preparation |
| Diameter | 8.0 in |
