![Pilot drill with 4 cutting edges for greater efficiency](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)
Pilot drill with 4 cutting edges for greater efficiency
The drill is better centred, running when drilling is minimised during drilling. The 4 cutting edges results in a faster drilling progress than with conventional 2 cutting drills. The more cutting edges are in use, the quieter the drill runs and also tends less to hook. 4 sheaths in use means better power distribution, less wear and therefore a longer service life.