Product information:
This model 3-piece titanium nitride coating high speed steel bit kit
Trapezoidal drill bit adopts double groove design, which can achieve the best speed and precision.
Made of M42 high speed steel with titanium coating to reduce friction and heat treatment
Heat treatment and high polishing
Titanium nitride coating for cooler operation
Three-sided handles on these step drill prevent the Chuck from slipping
Each step drill has 2 grooves, which can provide faster and smoother cutting effect, and the cone of the next cutter will automatically remove the burr of the finished hole.
Each step drill has a size mark for easy identification of holes.
Ideal for thin metals, steel, aluminum, copper, brass, fiberglass, PVC, etc., making these step drills available for many pipe, electrical and automotive tasks.
No pilot holes or pre-drilling are required.
Automatic removal of hole burrs during drilling