Extended Length Aircraft Drill Bit

For sinking long drywall screws or small lags, can't be beat. I mate the Fuller four flute countersink to it, and go for broke. There is some flex to it, so a steady hand is needed, especially in hardwoods. Same with a drill press. Go slow for best results. The fact that it is machined for the aircraft industry set aside, I recommend it for woodworkers who need that length for hanging cabinets, etc. A really good tool.