I had an alloy wheel locking bolt stuck on my car. I found the drill bits on this set not tough enough to drill into the head of the bolt. I bought an 8mm TCT drill bit (the kind for locksmith drilling, not masonry) and drilled a hole about 20mm deep. I used the largest spiral bit from this set to then successfully extract the wheel bolt (had to grind off a few mm from the tip to make it fit well in the hole I drilled). I trurned it slowly anti-clockwise using a large adjustable spanner, while applying pressure to let the spiral bite into the hole. So all-in all the spiral bits are tough and work well, while the drill bits are not that good but I did not expect that at the price. It did the job.
Verified purchase: Yes | Condition: New
Very good quality tool, did great for the job I needed it for. The smaller sizes were defiantly amazing as I couldn't reach certain parts and them small sizes where perfect for the job. Not big at all means you are able to carry it around. I would definitely recommend having a tool like this at home even if you not no DIY builder or anything as it is very useful.
Verified purchase: No
I didn't worked for me. I used the smallest one. Maybe bigger size actually works.
Verified purchase: Yes | Condition: New
Drill bits broke easy
Verified purchase: Yes | Condition: New
Very good value for money efficient worth the price
Verified purchase: Yes | Condition: New
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