7pc Mini HSS Cobalt Saw Disc Wheel Blade For Dremel Rotary Tools Sizes :1pc 22mm1pc 25mmm1pc 32mm1pc 35mm1pc 44mm1pc 50mmArbor Size: 1/4"Thickness: 1mm1pc 1/8" Mandrel This unique great tool set is ideal for precision cuts in wood, Steel, aluminum, brass, copper and more!High speed steel blade and mandrel set is ideal for fine precision cuts in aluminum, brass, copper, wood and plasticMaximum RPM: 20,000