Neiko 10037A Left Hand Drill Bit Set, 15 Piece | M2 HSS With Titanium Nitride Coating SAE (1/16" - 1/2")

The first time I used them it saved hours I would have to drill out the stud and use an essay out to remove it re-thread it to fit the new stud with the screw extractor it took about one minute to take it out but please remember that these do not drill bites they are extractors

These bits get dull real fast and have no bite getting started even at slowest speed and most pressure applied. Used a hand drill to remove broken bolt in 7 foot three point snow blower. Too big to get on drill press. So drilled with normal right hand bits and that worked fine and when I got to a point where most of the bolt was removed used the left hand bit and bolt came out just fine.

Have only used once but the bit backed the broken bolt out just as it was meant to do. Very pkeased.

The drill bits are super soft and dulled almost instantly. Useless for steel.

Came fast and will work for what I wanted