Description: Made of tungsten steel alloy forging blade, solid and durable. Opening neat, smooth, no broken edge, no tremor 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 Carbide Thread Shank Diameter: Approx. 10mm or 0.39inch Bit Diameter: 16mm or 0.39inch 17mm or 0.67inch 18mm or 0.7inch 19mm or 0.75inch 20mm or 0.78inch 21mm or 0.82inch 22mm or 0.86inch 23mm or 0.91inch 24mm or 0.94inch 25mm or 0.98inch 26mm or 1.02inch 30mm or 1.18inch Total Length: Approx. 46mm or 1.81inches Color: As pictures show Package Includes: 1 Piece Bottom Cleaning Router Bit Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.