Firepower Aluminum Oxide 3 in 60 Grit Flap Disc Farmhouse Sinks it features a tool free guard '304669309 it features a tool free guard and Quick Change wheel release Shaker inspired doors deliver clean lines and versatile style High performance aluminum oxide grain for fast material removal Premium abrasives cloth provides long wheel life 1 Inch wide 1 4 In Sub Brand N A Series Name N A Application Grinding Material Aluminum oxide Type N A Wheel Type Flap disc Grit 60 Diameter (Inches) 3 Thickness (Inches) 1 Arbor Diameter 1 4 in Threads Per Inch 1 For Use with Concrete & Masonry No For Use with Aluminum Yes For Use with Tile No For Use with Stainless Steel Yes For Use with Ductile Pipe No For Use with Asphalt No For Use with Ferrous Metal Yes Package Quantity 1 Warranty 90 day CA Residents: Prop 65 Warning(s) No For Use with Cut Off Saws No For Use with Angle Grinders No For Use with Chop Saws No For Use with Circular Saws No