Specification:

100% brand new and high quality
Automatically Deburrs Holes as you Drill
Titanium Nitride Coating for Cooler Running
Quick-change Hex Shank High Speed Steel for Long Life
These Step Drill Bits are ideal for variety of materials from metal, plastic, fiberglass to wood
They also help to enlarge existing holes



Sizes of the 3 Step Drill Bits:

15 Step Bit from 4 to 32