Standard Pack = 1 piece(s). Type = Nonwoven Flap Roll ; Size = 4 1/4 Inch x 2 Inch x 5/8-11 ; Grade = A Very Fine ; Maximum RPM = 2000 - 5000 ; Material = Aluminum Oxide ; Feature = Flaps Of Nonwoven Nylon Finishing Material For Surface Preparation And Finishing Applications ;