3M Discs 777F, Ceramic, 2 Inches Dia, Tr, 80 Grit - 1 per EA - 7000000551

They lock securely in place with just a half a twist. 1 per EA another half twist they're off. Constructed on a YF weight. water resistant polyester cloth backing. Grinding aid for cooler grinding. Can be ran wet or dry. Abrasive Material=Ceramic. Abrasive Trade Name=Cubitron?. Applicable Materials=Stainless Steel. Applications=Grinding; Deburring; Blending; Finishing; Removing Tool Marks; Die Polishing. Body Material=Cloth. Bond=Resin. Color=Yellow Button. Dia. [Nom]=2 in. Grit=80. Mounting=TR. Speed [Max]=25000 rpm. Style=TR (Plastic Button). Wt.=0.05 lb. .