Standard pack=1 piece(s). Type = Flap Wheel ; Outside Diameter = 1 1/2 Inch ; Face Width = 1/2 Inch ; Material = Aluminum Oxide ; Grit = 180 ; Mounting Type = 1/4 Inch Shank ; Maximum RPM = 30000 ; Interleaf = No ; Shank Diameter = 1/4 Inch ;