3 PC. TITANIUM NITRIDE COATED M2 HIGH SPEED STEEL STEP DRILLS  

DRILL 28 HOLE SIZES!
This compact set replaces 28 individual drill bits. Two-flute design gives you faster, smoother cutting. Titanium nitride coating for cooler running.
Automatically deburrs holes as you drill
Quick-change 1/4'' hex shank
M2 high speed steel for long life
Sizes:
3/16'' to 1/2'' Six Step Bit (3/16'', 1/4'', 5/16'', 3/8'',7/16'', 1/2'');
1/4'' to 3/4'' Nine Step Bit (1/4'', 5/16'', 3/8'', 7/16'',1/2'', 9/16'',5/8'',11/16'',3/4'');
1/8'' to 1/2'' Thirteen Step Bit (1/8'', 5/32'', 3/16'', 7/32'', 1/4'', 9/32'', 5/16'', 11/32'', 3/8'', 13/32''’, 7/16'', 15/32''’, 1/2'')