For installing all types of small wires in a wide range of electrical applications. 
The hole in flute (head) makes it easy to pull wires through holes in the wall. 
Boring action is faster, smoother, cleaner in plaster, metal lath and 
most every material encountered in wiring installations. Special 
flute finishing processing assures quick chip removal and almost no clogging 
or binding. The longer flute section allows for deeper boring. These bits are made 
of premium quality 100% carbon bearing steel.