Contaminant-Free Premium Regular Coated Abrasive Flap Disc, 4-1/2 in Dia, 40 Grit, Medium Grade, Z3
CGW Coated Abrasive Flap Disc, Contaminant-Free Premium Regular, 4-1/2 in Disc Dia, 5/8-11 Center Hole Thread Size, 40 Grit, Medium Grade, Z3 Zirconia Alumina Abrasive, Type 29 Conical Disc, Cotton/Heat Treated Poly Backing, 13300 rpm Maximum, Blue.