- 100% brand new and high quality

 - Spiral Step Drill bits  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 

 - 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

Included in this package:

 - 3X Step Drill Bits

 - 1X Automatic Center Punch 

 - 1X Case

Warranty & Customer Service:

 30 days money back 60 days seller's guarantee, 24 Hours friendly customer service!