Feature●2" Roll Lock Sanding Discs With 1/4 Holder Die Grinder Quick Change Disc●Material Aluminum Oxide●Backing Material Strong Nylon Scrim Backing●Sanding Grade Coarse, Fine, Medium●Application Grinding, Grinding/Sanding, Polishing stainless steel, alloys, ironDescription 2" Roll Lock Sanding Discs With 1/4 Holder Die Grinder Quick Change Disc, Material Aluminum Oxide, Backing Material Strong Nylon Scrim Backing, Sanding Grade Coarse, Fine, Medium, Application Grinding, Grinding/Sanding, Polishing stainless steel, alloys, iron