3M Flap Disc 577F, 40, T27 Quick Change, 4-1/2 in x 5/8 in-11

A grinding aid reduces grinding temperatures for processes involving heat-sensitive alloys such as stainless steel, nickel alloys, and titanium. Disc Type T27. And, because their overlapping construction allows more abrasive material to be loaded onto the cutting surface, they far outlast typical discs.