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 do not require a center punch. Titanium nitride coated high speed steel.
Each set includes one each of the following:
- 6-step bit – ³/₁₆” to ½” steps
- 9-step bit – ¼” to ¾” steps
- 13-step bit – ⅛” to ½” steps