This 3 piece titanium nitride coated high speed Steel drill bit set allows precision drilling of 28 different size holes.The step drill bits feature a double fluted design for optimum speed and accuracy. Made from M42 high speed steel with a titanium coating for reduced friction and heat.
Features: 1. Heat Treated and Highly Polished. 2. Titanium nitride coating for cooler running. 3. Three sided shank on these step drills prevents slipping in the chuck. 4. Each Step drill has 2 flutes to give a faster, smoother cut and the tapered face of the next cutter automatically deburrs the finished hole. 5. Made from M42 high speed steel with a titanium coating for reduced friction and heat.