Step Drill Bit 3 piece Set 1/4" Hex Shank 6, 9, and 13 Step

Allstar Performance Step Drill Set

1/4" Hex Shank

3 Piece Set

Titanium nitride coated high speed steel  

Drill Multiple size holes with one bit

Drill sheet metal and aluminum without deforming or distorting

Bits start on contact, deburr and chamfer while drilling and does not require a center punch

Six Step: 3/16", 1/4", 5/16", 3/8", 7/16", 1/2"

Nine Step: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"

Thirteen Step: 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"