Description:High speed steel ensures durabilityTriangular and hex shank cone drill metal hole cutter spiral drill bitThe ladder of its unique structure, a bit can open a variety of specifications of apertureDo not need to use center punch, compared with the ordinary twist drill is not easy to be brokenUse of tools: drill, bench drill, Work while water cooling, can effectively extend the service life of drillSpecification:Material: High Speed Steel HSS SteelTriangular Shank, Drilling/Step: 4-32/15, 107mm / 4.21inTriangular Shank, Drilling/Step: 5-23/10, 82mm / 3.22inTriangular Shank, Drilling/Step: 4-22/10, 82mm / 3.22inTriangular Shank, Drilling/Step: 4-12/9, 77mm / 3.03inHex Shank, Drilling/Step: 4-32/15, 107mm / 4.21inHex Shank, Drilling/Step: 5-23/10, 82mm / 3.22inHex Shank, Drilling/Step: 4-22/10, 82mm / 3.22inHex Shank, Drilling/Step: 4-12/9, 77mm / 3.03inPackage Includes:1 x Drill BitsNote:Please allow 1-3mm error due to manual measurement, make sure that you do not mind before you bid.Due to the different monitor and light effect, the actual color may be slightly different from the picture color.'