Titanium Nitride (TiN) is a multi-purpose coating which increases chip flow in softer materials
1) Locate the holes center point
DRILL-TWIST 3/8"DIA X 1/4" SHK
round holes without deforming the surrounding material
They are made of M2 TiN Coated high speed steel and are precision ground for excellent performance throughout the cut and long tool life
Hougen 11120C 9/16"RotaCut Hole Cutter (3 pack) doc-50 Titanium Nitride (TiN) is aItem Details Hougen RotaCut Sheet Metal Cutters are precision ground and creates clean, burr free, round holes without deforming the surrounding material. Cutter makes hole making faster and easier when used on sheet metal, plate materials and plastics. Cutter cuts 3 times faster than twist drills or hole saws and lasts 10 times longer making it ideal for electrical, piping, conduit work, sheet metal fabrication, spot weld removal, maintenance