ITEM NAME:10x22mm CNC Cleaning Bottom Router Bit Thread Cutter Lock Milling Cutter Description: Made of high quality tungsten steel alloy forging blade, solid and durable. Opening neat, smooth, no broken edge, no phenomenon, chip easily. Small incision resistance,feature drilling stably, fast speed, not breaking the border. Using for hand-making wood door unlock or other woodworking. Widely used on plywoods, hardwoods, PVC plate, softwoods and more. Specification: Material: Tungsten Car.Made of high quality tungsten steel alloy forging blade, solid and durable. Small incision resistance,feature drilling stably, fast speed, not breaking the border. Color: As pictures show. Total Length: Approx.