Scotch-Brite Disc Pad, 922, black, 1 121/125 in (50 mm) 3M Disc Pad Holder enables the use of 2 in (5.08 cm) 3M Hook and Loop Discs on right angle grindersIt features 3M Dual-Lock Hooks to securely hold disc to sander and to provide easy attachment and removal. Product Information Brand 3M Part # 7000045864 Origin Country USA Product Type Backup Pads Extra Product Information3M Disc Pad Holders have a centre hole with internal threads?choose the thread size that matches the external thread size of your right angle grinderT-shaped hooks securely hold a surface conditioning disc and provide quick and easy disc attachment, removal, and re-attachmentThe hook-and-loop feature enables the disc to be used and re-used for the extent of the abrasive lifeDiscs are sold separately.?The Scotch-Brite Surface Conditioning Discs and light grinding/blending products (sold separately) deburr, clean, blend, and finish a wide variety of materialsUsing surface conditioning products with a 3M Disc Pad Holders generates finishes suitable for paint.Product InformationCentre pin back-up pad connects center-hole Scotch-Brite Surface Conditioning Discs (sold separately) to power toolsCentre pin enables well-centered disc attachment, which reduces vibration and increases operator comfortCentre pin is specially designed to not interfere with work surfaces, minimizing risk of scratching or gougingUse with right angle grinder