KKmoon 13pcs Left Handed Drill Bit Set M2 HSS with Titanium Nitride Coating (1/16" - 1/4")

Having sheared off a small bolt head in my motorcycle coolant drain hole, I needed to drill into the bolt in order to remove it. It was very difficult to centre the fine drill due to both the location and dimensions involved. The answer was a drill guide.I was able to completely centre the drill without any risk of it slipping and damaging the surrounding flange or thread. Once I had made a small indentation in the centre of the bolt, I changed the drill bit and fitted one of these left handed drill bits. I was then able to draw out the broken bolt with absolute ease.I have since used the same method to withdraw some screw fastenings on a tower fan whilst still maintaining the functionality of the screws for reassembly.

I had a sensor screw which had snapped on my vehicle, these were a huge life saver for me and saved me a lot of time and hassle. I wish I found out about these earlier! I definitely would recommend but obviously be careful, I was a bit clumsy with one of the drill bits and snapped it in the process but either way it already has paid me back in money. 10/10

Seem to be good quality, tried drilling through 6 mm steel plate, worked fine but do remember it needs to run in reverse otherwise you get nowhere. Will not work in a pillar drill unless it can be reversed.

Worked a treat, got a broken lug out without using my extractor tool

With a bit of brute force, was able to extract a snapped off bolt stuck inside my motorbikes engine casing. Definitely good for getting small fiddly bolts out of holes.

I can’t recall a the last time I bought drill bits and they worked but these are excellent

Used to drill steel bolts out of a motorcycle frame. Snapped 2 bits in minutes.

Useless just uselessThey went blunt very quick then snapped.Didn't even make a dent in the stainless bolt