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3M Hookit Blue Abrasive Disc 321U is a multi-hole, hook-and-loop sanding disc designed for paint preparation and coatings removal. The ceramic aluminum oxide mineral blend delivers consistent cut and finish, while the multi-hole pattern helps reduce loading and improve dust extraction.
| 3M Product Number | 321U |
| Part Number | 36152 |
| Product Form | Disc |
| Overall Diameter | 3 in |
| Grit | 500 |
| Color | Blue |
| Abrasive Material | Ceramic Aluminum Oxide |
| Backing Material | Paper |
| Backing Weight | C Weight |
| Coat Type | Closed Coat |
| Attachment Type | Hook and Loop |
| Number of Vacuum Holes | 7 |
| Vacuum Support | Yes |
| Wet or Dry | Dry |
| Application | Clear Coat |
| Package Quantity | 50 Discs per Carton |