3pcs Step Drill Bit Titanium Nitride Coated Set Steel Step 1/4Shank

Features: * Brand New and High Quality *This compact Set Replaces 28 Individual Drill Bits *Automatically Deburrs Holes as you Drill *Titanium Nitride Coating for Cooler Running *Quick-change 1/4 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 *The two flute design tips made the penetration faster without chipping Specifications: *Material:Titanium Nitride Coating High Speed Steel *Sizes of the 3 Step Drill Bits: 6 Step Bit from 3/16 to 1/2 9 Step Bit from 1/4 to 3/4 13 Step Bit from 1/8 to 1/2 Package Contents: 3pcs Drill Bits