INSTALLER BITS: Feature hole-in-flute design to fish wire through holes ONE-STEP OPERATION: Drill the hole, feed the wire through the bit-hole, then pull the wire through THREE-FLAT SHANK: Provides better bit grip EXTRA LENGTH: Allows for deep drilling 82 POINT: Provides fast drilling and easy starts PRO DESIGN: Ideal for professional electrician or low-voltage cable installer EASY PROCESS: Provides quick-and-easy way to pull wire