PFERD Polifan® Coated Abrasive Flap Disc, Threaded, Series: Universal Line PSF-Z, 4-1/2 in Disc Dia, 5/8-11 Center Hole Thread Size, 60 Grit, Zirconia Alumina Abrasive, Type 27/Flat Disc, Cloth Backing, 13300 rpm Maximum
