I’ve not used this product as yet but I’m just about to so I can remove and replace the Bottom Bracket on my Specialized commuter bike (which has suddenly started to creak). I’ve not used this type of tool before - only the Square Taper type before - however, opted for this 1/2” Drive ‘Bit’ as opposed to a open spanner to do the job, as it can be used with a Torque Wrench if necessary as well with an ordinary wrench. The product looks nicely finished and hopefully it will do the job without any issues … I just need to refer to a few YouTube videos to make sure I know what I’m doing.