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

This?auction?is?for?Three?(3)?pieces?of?New?Titanium?Coated?Step?Drill?Bit?that?covers?28?sizes

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

Sizes?of?the?3?Step?Drill?Bits:

6?Step?Bit?from?3/16"?to?1/2":3/16''（4.76mm)，?1/4''(6.35mm），?5/16''(7.94mm)，?3/8''(10.35mm)，?7/16''(11.11mm)，??1/2''(12.7mm)

9?Step?Bit?from?1/4"?to?3/4":1/4''(6.35mm)，5/16''(7.94mm)，3 /8''(10.35mm)，?7/16''(11.11mm)，1/2''(12.7mm），9/16''(14.28mm)，5 /8''(15.88mm)，11/16''(17.46mm)，?3/4''(19.05mm)

13?Step?Bit?from?1/8"?to?1/2":（3.18mm)，?5/32''(3.97mm)，?3/16''（4.76mm)，?7/32''(5.56mm)

1/4''（6.35mm)，9/32''(7.14mm)，?5/16''(7.94mm)，?11/32''(8.73mm)，?3 /8''(9.53mm)，?13/32''(10.32mm)，7/16''(11.11mm)，15/32''(11.91mm)，1 /2''(12.7mm）

Package?Included:

1?x?3?PC?TITANIUM?STEP?DRILL?BITS