Freud Diablo DCD050060H15G 5 in. 60-Grit Universal Hole Random Orbital Sanding Disc with Hook and Lock Backing (15-Pack) 5-inch sanding disc 60-grit paper Universal hole pattern, a one-size-fits-all design (fits all 5 and 8-hole sanders) for fast and precise alignment Premium ceramic grain blend, a superior quality formulation designed for fast material removal and long sanding life Premium Hook and Lock backing enables repeated attachment and removal of discs for a consistent secure connection