Feature(may vary by option.)

●(Ultra Hardness Material) HSS CO Cobalt High Speed Steel Step Drill is coated with TiAlN Titanium Nitride coating to achieve the hardness of HRC89. Improved high temperature and abrasion resistance of step drills
●4-Blade Step Drill: The 4-blade blade allows the blade to be evenly distributed and drilled close to a true circle. Compared to conventional double-blade blades, it can distribute the load on a single blade for superior durability and cutting performance
●Conical Drill for Stainless Steel: Spiral shape is ideal for stainless steel and is used for drilling holes in stainless steel, thin iron plates, aluminum plates, wood, vinyl, resin, etc. It can also be used to drill holes and chamfered at the same time, saving time
●Various Hole Diameters: 0.2 - 0.5 inch (4 - 12 mm), 9 stages (4, 5, 6, 7, 8, 9, 10, 11, 12 mm)), each hole is expanded sequentially from small to large hole, so you can drill and expand the holes of various sizes
●(More Precision Design) Each step drill is engraved with millimeter precision to improve your work accuracy. The hexagonal axis duplex design makes the combination of step drill and electric drill more tight

[4-21x9]




[4-20x9]




[4-12x9]




[4-22x10]





Description

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4-Blade Step Drill Features:

HSS-Co M35 Steel, Hardness: HRC89It has excellent abrasion resistance, heat resistance, and sharpness, and the titanium coated tap drill has high rust resistance.

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  • Product Name: 4-Blade Step Drill
  • Blade edge: 4 blades
  • Material: Cobalt High Speed Steel (HSS-Co/M35)
  • Surface treatment: TiAlN titanium coating.
  • Shank Diameter: 1/4 inch hex shank (0.25 mm)
Application Surfaces

Hole borders for stainless steel, iron, non-ferrous metals, etc.Can also be used on wood and acrylic plates.

How to use

Insert the hex shaft into the bit slot of the charging dryer.The zipper model is firmly secured with the handle. Please remove the handle.Firmly fix the workpiece and press the drill blade right angle against the piece.Please be careful that the thin drill blade may break if pressed hard.

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Note:

Please read the instructions for the electric tools you use before using.Before use, please check if there are any abnormalities such as cracks or cracks.When putting on and removing the product, please do not connect electricity.Please use protective glasses when working.Please attach protective equipment according to your work content and location.The drill rotates at high speeds.Never touch your face or hands.Please remove any cut edges with a wire brush.Be sure to avoid impact when using an impact driver.Please do not modify or processing.Please do not use if it stops working.After use, please clean it well and keep it away from children.Please do not use for anything other than the intended purpose.

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