Trying to remove a really tight grub screw, I rounded off 4 Regular allan keys. I got so annoyed I Decided to spend a few quid extra-and hope it would make a difference. I've had Wera tools in the past, and They are really impressive quality (German higher-end), so I went for thesis. You can get a cheaper set of Wera allan keys whichwill thus do the job (the Hex-plus profile design really makes a difference! So just get any Hex-Plus Wera). I chose this set: because I have a thing for colors! Allen keys are normally so boring ... not this set! Functional and cooooool. Back to the point. The grub screw. First time with the Wera allan key, it came straight out, and not a mark of use left on the Allan key. Very impressed and happy did I finally got this grub screw out! I have no doubt That thesis allan keys will last for years and become a staple part of my tool kit. You get what you pay for.