Champion Electrician Set CT3 Hole Cutters MSD-HEX-13 QCD - ELEC-KIT Includes MSD-Hex-13, CT3 Hole Cutters (7/8, 1 1/8, 1 3/8) and Quick Change Driver Drill perfect holes of multiple diameters in sheet metals up to 1/8" thick Titanium Nitride (TiN) coated for enhanced performance and longer tool life Impact Ready! 1/4" Hex Shank is ideal for use in impact drivers and cordless power drills 2 Flute design drills faster, cleaner holes than other step drills on the market. Accurate, fast drilling due to self-starting split point. Popular applications include drilling junction boxes, switch boxes, metal studs, electrical appliances, lighting fixtures, PVC, plexiglass, and auto body repair.