3M Xtract™ Hookit™ Low Profile Finishing Back-up Pad is constructed of soft density foam with a 10 degree blunt tapered edge and is recommended for finishing applications on flat or contoured surfaces. Part of the 3M Xtract™ Series, designed for optimal dust removal, enabling a vacuum to extract dust off the workpiece to prolong disc life and enhance productivity. Use this disc pad with grades 220 and higher 3M Xtract™ Hookit™ Discs (sold separately).