3M Hookit Blue Longboard Abrasives 321U Sanding Rolls
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  • 3M Hookit Blue Longboard Abrasives 321U Sanding Rolls

3M Hookit Blue Multi-Hole Abrasive Longboard Rolls 2-3/4 Inches Wide

3M Blue Multi-Hole Abrasives cut faster, better, with less loading, and improved dust extraction so you get better performance, longer service life, and better finish results for paint prep and surface repair.

Hookit hook and loop backing means quick, easy change-outs, and the premium aluminum oxide mineral blend and anti-loading coating mean fewer change-outs so you can finish your project faster. All 3M Blue sandpaper rolls tear easily to size to fit your Hookit sanding block or sander with Hookit pad.

2-3/4 wide abrasive sheet rolls are available in the following Grades (grits): 80, 120, 150, 180, 220, 240, 320, 400, 500, and 600. Roll length is 13 yards.

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$54.23 / rl
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Tech Spec Product Info User Generated Content
3M Blue sanding sheet rolls deliver best-in-class performance at every stage of paint prep and body repair. Premium aluminum oxide mineral abrasive is blended with ceramic grain for a full range of sanding applications. Specially-designed multi-hole chevron pattern reduces loading, extends service life and aligns with Hookit backup pads. The Hookit attachment method makes sanding sanding sheet changes easy and fast.

Blue abrasives sheet rolls feature a multi-hole pattern specially designed to capture dust and keep it away from the abrasive surface. The ceramic mineral blend on the 3M Hookit Blue Abrasive Longboard Sheet Roll is bonded using upgraded resins for enhanced durability. An anti-loading coating helps keep dust from gathering between the abrasive grains for a better, faster cut and for consistent performance throughout the life of the abrasive. The innovative ceramic mineral blend cuts through paint and filler with consistent, reliable results every time.

3M Blue Abrasive Features

  • Best-in-class abrasive for all stages of the paint prep and surface repair processes.
  • Advanced, engineered ceramic mineral blend offers optimum in-class abrasive performance.
  • Multi-hole pattern reduces loading and delivers maximum dust extraction for a cleaner surface.
  • Upgraded resins improve finish and durability.
  • 3M Hookit attachment makes abrasive sheet changes easy and quick.


  • Performance Level: Better
  • Hole Design: Multi-Hole, Clean Sanding
  • Product Form: Sheet Roll
  • Sanding Surface: Clear Coat, Fiberglass, Paint, Plastic, Primer
  • Abrasive Mineral: Ceramic Aluminum Oxide
  • Attachment Method: Hookit
  • Sanding Method: Hand, Machine
  • Wet or Dry: Dry


Item Number  Grade  Grit Type  Width  Length 
MMM-36187  80  Coarse  2-3/4 inches  13 yards 
MMM-36189  120  Coarse  2-3/4 inches  13 yards 
MMM-36190  150  Coarse  2-3/4 inches  13 yards 
MMM-36191  180  Coarse  2-3/4 inches  13 yards 
MMM-36192  220  Coarse  2-3/4 inches  13 yards 
MMM-36193  240  Coarse  2-3/4 inches  13 yards 
MMM-36195  320  Medium  2-3/4 inches  13 yards 
MMM-36196  400  Medium  2-3/4 inches  13 yards 
MMM-36197  500  Medium  2-3/4 inches  13 yards 
MMM-36198  600  Medium  2-3/4 inches  13 yards 
Attachment Type: Velcro
Material: Ceramic Alumina
Type: Rolls and Sheets
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