Description: 100% Brand New with Premium Quality Used for workpiece circular aperture chamfering or cone hole, the edges on the surface of the chamfering processing Suitable for using in hardness under 25 artifacts, such as aluminum, insulation board, PVC board Round shanks allow use with a wide variety of toolholding systems For chamfer or tapered holes in the round hole of the workpiece, the edges on the surface are chamfered Specification: Material: High Speed Steel Overall Length: approx. 5cm / 2 Inch Cut Hole Size: approx. 5-10mm / 0.2 - 0.4 Inch Package Includes: 1 Piece Countersink and Deburring Tool Note: Size for manual measurement, there may be a 0 to 1 cm error, belongs to the normal phenomenon. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!