Big Horn 19249 High Speed Steel Step Drill Bit Titanium Nitride Coated. Speed up kitchen and bath fixture installations with this high-speed steel step drill. This 3 piece set of titanium nitride coated, high speed steel step drill bits replaces 28 individual drill bits so you save time on switching out drill bits.
Slide the top to the drill you want, tilt, and out it comes. Super for kit building. A nicely made imported set. Will Fit most rotary tools with the proper collet or chuck. With this set drill glass. rock, stone etc. Make precision micro holes for jewelry, etc. Complete with a micro index; extract each individual drill with ease. Specialty designed box keeps bits securely in place and dispenses one drill at a time.