8pcs 6-13mm Pneumatic Strong Power Magnetic Nut Driver Drill Bits Set 65mm 1/4" Hex Shank Metric Socket Wrench Screw

Great price and adequate quality

Thank you will do repeat business A++++ best seller ever

It's not easy to find high-quality left-hand drill bit sets - several that I have tried are cheaply-made and not strong enough to cut through harder bolts. The Kkmoon set is a notable exception - the bits are strong (and don't bend under pressure) and cobalt reinforced to cut through steel.

be very carefull when using the smaller drill bits! However, the bigger two of the three is what really worked for me in cutting steel. The bigger of the two extractors actually came in very handy as well. they are nice, yes and they do work once u use em correctly!!! ensure ur hole is deep enough, set the extractor in place and use a hammer to knock it in the hole and then u can use a socket (as i did) and turn in the left-hand direction (like ur pulling a bolt) and have ur stud extracted. when i used the hammer to knock in the etractors, i thought they would be damaged but they seem to be very durable. !!! it didnt work 100% of the time for me but it worked.

How long these last I don't know, but right now they're doing a good job.