Resin-bonded aluminium oxide discs for cutting, trimming and deburring. Suitable for use on metals, alloys, plastics, fibreglass, and wood. These high-speed discs are compatible with most rotary tools, including Silverline, GMC, and Dremel. The set includes 5 x 31mm discs and a 3.17mm mandrel. Maximum speed is 28,000rpm.