Silverline 18pc Cutting Disc KitResin-Bonded Aluminium Oxide Discs For Cutting, Trimming & DeburringFor Use On Metals, Alloys, Plastics, Fibreglass & WoodCompatible With Most Rotary Tools Including Silverline, GMC & DremelIncludes: 17 x 22mm discs & 3.17mm mandrelMax: 28,000rpm