3M Hookit Clean Sanding Disc 236U, 55598, 5 in P80 C-weight, 50 per inner 250 per case 3M Hookit Clean Sanding Disc 236U features a 3M proprietary multi-hole pattern that evacuates dust better than 5- or 6-hole products � dramatically increasing disc life. The design achieves an ideal balance between the abrasive surface and dust extraction holes to maximize cut and optimize the life of the disc. Precise multi-hole pattern means excellent dust extraction and eliminates the need to align holes
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