Inexpensive Search Drill Bit Tightening Basket Strainers Changing an Extrol Tank
It really comes in handy when running a vent through an attic with 8 inches of insulation. The bit will come right through the insulation. The guy in the attic who usually has to remove the insulation to find the smaller search bit will thank you. Cut off the tip after each use, and you have a brand new bit.