Purple Hookit™ Abrasive Discs

Hookit Purple Abrasive Discs - 745I & 740I

5" - 8" Discs • 80 - 36 Grits
By: 3M

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Purple abrasives are 3M’s best performing class of abrasives.
Both more durable and faster cutting than other discs, they provide the greatest dollar value and the highest quality in abrasive minerals available.

Faster cutting increases productivity, while long-lasting abrasive particles reduce disc consumption — so shop techs spend less time changing sandpaper and more time sanding.

The Hookit™ attachment system allows for easy re-use of the discs, to take advantage of their full working life.

Purple Abrasive Discs produce a consistent finish you can count on — for higher-quality execution and reduced re-working.

• Save on labor and materials with reduced costs and excellent results
• Premium aluminum oxide abrasive
• Excellent for use on tough marine gelcoat, paint, and primers
• Also use for shaping and scratch refinement on fiberglass, fillers and putties, metals, and plastics
• Stearate coating prevents loading and provides a consistent finish
• Resin bonded for heat resistance
• Priced and sold by the box

• Note that 3M is switching these "no-hole" discs over to the better performing, perforated Clean Sanding discs.
• Even in non-vacuum applications, the Clean Sanding Discs perform better and last longer!
So if you don't find the disc you want in this group, check out our Clean Sanding entries, where you will find the disc you are looking for — see Related Products, below.

Heavy on the technical side...
All these sheets have a stearate coating to prevent loading and provide a consistent finish.
In 740I the coating is clear, in the others, it is white - making the papers appear light purple.

The discs in this group:
• Note - all the 700 series discs in this group are constructed of a unique blend of aluminum oxides and an incredibly durable man-made ceramic mineral, Cubitron, for longer disc life; the 300 series is made with premium aluminum oxides
• 740I dark purple discs are very coarse, with an aggressive, non-loading open coat abrasive pattern on a heavy E-weight paper backing
• 745I light purple discs come only in 80 grit, they have an evenly distributed closed coat abrasive pattern on a heavy E-weight paper backing
• 734U light purple (moderately coarse grits) discs have a C-weight paper backing
• 334U light purple discs (finer grits) are constructed of a carefully graded, higher performance aluminum oxide mineral on a C-weight paper backing

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