Repl. by Norton 09192 -- 3" 320GR Very Fine Blue Carbo Flex-Loc Surface Blending Disc (25/box) Application Info: 3" Flex Loc Surface Blending Disc 320 Veryfine Blue 25/box Fibratex Flex-Loc TR Surface Blending Discs Ideal for removing rust and oxides, blending out disc marks, and removing coatings and gasket residues from automotive surfaces. Thick, reinforced non-woven backing is impregnated with tough aluminum oxide abrasive. Advanced resin system will not smear.