3pcs Titanium Nitride Coated Step Drill Bit Set Quick-change 1/4" Hex Shank larger Titanium Comes with Free Pouch to hold drill bits.. 

Features:
100% quality and Brand new.
Drill 28 Hole Sizes
This compact Set Replaces 28 Individual Drill Bits
Automatically Deburrs Holes as you Drill
Two-flute Design Gives You Faster, Smoother Cutting
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

Specification:
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"
Weight :0.11kg

Package Included:
3pcs Drill Bits