Features: These cutters are made from tungsten carbide steel for high hardness and long service life. Incisive cutting edge would improve working efficiency and product quality. Designed with a 6mm diameter shank that is suitable for most machines. Usually used on wood routers or CNC engraving machines for woodworking. It can be used for slotting a wide range of materials including wood, MDF, PVC. Specification: Material:Tungsten steel Type( Optional ) Cutting Edge Diameter Shaft Diameter Cutting Length Overall Length 6*16mm 16mm / 0.6in 6mm / 0.2in 7mm / 0.3in 44.5mm / 1.8in 6*22mm 22mm / 0.9in 6mm / 0.2in 11mm / 0.4in 45mm / 1.8in 6*25mm 25mm / 1in 6mm / 0.2in 17mm / 0.7in 48mm / 1.9in 6*28mm 28mm / 1.1in 6mm / 0.2in 17mm / 0.7in 50mm / 2in Quantity: 1 Weight: 21g~54g / 0.7oz~1.9oz (approx.) Package list: 1 * Cutter Bit