Resin-bonded aluminium oxide discs for cutting, trimming and deburring. For use on metals, alloys, plastics, fibreglass and wood. Compatible with most rotary tools including Silverline, GMC and Dremel. Includes 5 x 31mm discs and 3.17mm mandrel. Max 28,000rpm. Resin-bonded aluminium oxide discs for cutting, trimming and deburring. For use on metals, alloys, plastics, fibreglass and wood. Compatible with most rotary tools including Silverline, GMC and Dremel. Includes 5 x 31mm discs and 3.17mm mandrel. Max 28,000rpm.