Firepower Aluminum Oxide 3 in 60 Grit Flap Disc Farmhouse Sinks Maximum Depth of Saw: Unrestricted Galvanized Rod Maximum Depth of Saw: Unrestricted This compact 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 arbor hole