SPECIFICATION 1. Enlarge, shape and/or round bevel existing holes in Porcelain, Hard Ceramic, marble and granite 2. Also available to make a hole directly, but not recommend to do this job. 3. Used on angle grinder Feature: Vacuum brazed technology provide high efficient working performance Grit #50/60 provide you great finishing Very easy to operate. Size: 8/15/25/30 mm Segment lenght: 40 mm Connection: M14