Professional tool for commercial or occasional use Mini Diamond Cutting Discs Suitable for all rotary tools that take a 3.17 / (1/8") mandrel 8pc diamond cutting disc Suitable for cutting stones / glass / ceramic / porcelain / tiles / aluminium and copper Suitable for use with / compatible with tools Maximum speed of the mandrel 3000 rpm Disc dimensions - 22mm x 0.6mm (x 2) and 20mm x 0.6mm (x4) Extra thin diamond cutting disc so perfect for cutting minimal material away Comes in a plastic pouch for easy storage and transportation Suitable for cutting metal / stone / glass etc... SET INCLDES THE FOLLOWING - 4 x 20mm x 0.6mm Diamond Cutting Disc - 2 x 22mm x 0.6mm Diamond Cutting Disc - 2 x 3.17 (1/8") Mandrel - total length 42mm) - 1 x plastic see through pouch for easy storage and transportation