Diamond-vented cutting discs for cutting, trimming and shaping. For use on ceramics, tiles, stone, glass, plastics, fibreglass and wood. Compatible with most rotary tools including Silverline, GMC and Dremel. Includes 5 x 22mm discs and 3.17mm mandrel. Max 28,000rpm. Diamond-vented cutting discs for cutting, trimming and shaping. For use on ceramics, tiles, stone, glass, plastics, fibreglass and wood. Compatible with most rotary tools including Silverline, GMC and Dremel. Includes 5 x 22mm discs and 3.17mm mandrel. Max 28,000rpm.