Description
- High Quality Material: Step Drill Bits is made of high speed steel, and the Titanium Nitride Coated to reduce friction heat, and run cooler. By the heat treatment and tempering, so the step bits has the function of long-term use.High-speed steel spiral flute nitrogen-containing drills are of better quality than ordinary step drills.
- Benefits: Mark hole locations and Two-fluted design makes drilling faster and smoother. Surface depth gauges make drilling precise. Sizes are laser etched into the metal so they will not wear out even after repeated use, make precise drilling easy. 1/4" hex shank work with most drill or drills with 1/4" chuck , fits into power tools chuck securely and eliminates slip.
- Application: Perfect for home DIY and general building supervision / engineering use. Suitable for use of drilling Cut or enlarge holes in materials like thin steel, wood, thin iron/copper, aluminum, PVC, etc.
- Contain 3 Size: 4-12mm, 4-20mm and 4-32 mm. Three drill bits can meet your different needs. Special cutting geometry Drills and deburrs even the thinnest sheet metal.
- Package Includes: Step Bits 4-20mm. If you have any quality problems, please leave us a message and we will give you a satisfactory solution as soon as possible.
