SAIT Ovation Plus+ Coated Abrasive Flap Disc, Close High Density, 5 in Disc Dia, 5/8-11 Center Hole Thread Size, 36 Grit, Coarse Grade, Zirconia Alumina Abrasive, Type 27 Flat Disc, Y-Weight Polyester/Plastic Backing, 12200 rpm Maximum, Blue