022 in, Bristle Trim Length 3/8 in, Abrasive Material Abrasive Nylon, Face Width 7/32 in, Max. RPM 20,000, For Use With Light Deburring, Edge Blending, General Surface Finishing 0..1 1/2 in, Mounting Type Arbor Hole, Arbor Hole Size 3/8 in, Abrasive Shank Size No Shank, Wire Dia.