Aluminium oxide and vented diamond-dust cutting discs, HSS saw blade and grinding wheel for cutting, deburring, trimming and grinding. For use on metals, alloys, ceramics, tiles, stone, glass, plastics, fibreglass and wood. Compatible with most rotary tools including Silverline, GMC and Dremel Includes 2 x 22mm discs, 2 x 32m discs and 3.17mm mandrel. Max 28,000rpm.