2024 Spiral Step Drill Bit Accurate Positioning 118 ° X Shaped Opening Design M35 High Speed Steel Hex Step Bit

1、Durable: Made of strong M35 high speed steel and added with 5% cobalt to form a hardened heat resistant alloy with faster cutting speed and longer service life 2、Accurate Positioning: 118 ° X shaped opening design for more accurate positioning and effectively reduce bit slip 3、Hex Shank Design: Hex handle design not easy to slip more firm and more durable 4、Application: Can drill 2mm thin iron (hardness within 25 degrees) 2mm copper plate or aluminum plate 5mm wood plate or plastic plate 5、Specification : The diameter of the handle is 6.35mm and the diameter of 4mm 6mm 8mm 10mm and 12mm can be drilled