Item Type: Router Bit Material: Tungsten Steel Alloy Use: For woodworking grooving or other woodworking. Surface Coating: PTFE Coating Shank Diameter: Approx. 8mm / 0.31in 1Better Cutting: Suits perfectly for the trimming and chamfering on various wood material, making your work easier and more accurate. 2Reliable Works: Comes with incisive cutting edge, the woodworking router bit ensures chip free operation, very safe and reliable. 3Fast Adjusting: You can adjust the cut depth according to your needs, meanwhile the locking can prevent shaking during the cutting. 4Great Material: Adopting premium tungsten carbide material, the router bit cutter is not easy to break, very durable for long use. 5Easy to Install: Designed to have a light weight and a compact size as well, the convenient installation can be quickly completed.Please avoid cutting metal and non wood materials, such as steel, iron and sand. Please keep it away from water to avoid rusting.2 x Router Bit