Item Name: Cutting Chamfer Bit Cutter Deburring Drilling 1/4" Hex Shank Countersink Drill. Material: 45 # SteelShank Diameter: 6.35mm / 0.26 inch100% brand new and high qualityDiameter: 13mm / 0.51 inchFunction: mostly used for workpiece removal burr and wood board plastic plate openingHeat treatment carbon steel blades ensure a good tool life.Six Flute Bevel Countersunk Debur 1/4 "Hex.Length: 36mm / 1.42 inchColor:GreyCut quickly and easily on wood, soft metal, rubber, plastic and other ma