Step Drill Bit High Speed Steel Spiral Flute Cone Centering Drilling Tool with Hex Shank 4?20mm

About this item

• Feature: 1. [118 degrees X TYPE OPENING] The step drill is designed with 118 degrees X type opening, with accurate positioning and reducing drill bit slippage. 2. [DOUBLE SPIRAL FLUTES] Double spiral flutes, greatly reduces drilling resistance, with fast cutting and smoother chip removal. 3. [WITH HEX SHANK] With standard hex shank, which is stable in installation, not easy to slip or fall off during use. 4. [HIGH SPEED STEEL] Made of high speed steel material, with high hardness and wear resistance, not easy to deform or corrode. 5. [DRILLING THICKNESS] The drilling Diameter is 4?20mm, which can be used for 2mm thin iron, 2mm copper or aluminum plate, 4.5mm wood or plastic, etc. Specification: Item Type: Step Drill Bit Material: High Speed Steel Drilling Diameter: Approx. 420mm 0.20.8in Drilling Thickness: 2mm thin iron (within 25 degrees of hardness) 2mm copper or aluminum plate 4.5mm wood or plastic plate. Package List: 1 x Step Drill Bit[118 degrees X TYPE OPENING] The step drill is designed with 118 degrees X type opening, with accurate positioning and reducing drill bit slippage. [DOUBLE SPIRAL FLUTES] Double spiral flutes, greatly reduces drilling resistance, with fast cutting and smoother chip removal. [WITH HEX SHANK] With standard hex shank, which is stable in installation, not easy to slip or fall off during use. [HIGH SPEED STEEL] Made of high speed steel material, with high hardness and wear resistance, not easy to deform or corrode. [DRILLING THICKNESS] The drilling Diameter is 4?20mm, which can be used for 2mm thin iron, 2mm copper or aluminum plate, 4.5mm wood or plastic, etc.