Appears to be a sturdy bit of kit and did the job required.
Not a bad tool, it good for beginners.
It could do with having slightly longer teeth to sit in the nut better.
The strong points of this tool are the price and that it can be removed from the handle so it can be attached to a torque wrench.
The Shimano original is more expensive but it does the job better.
It is ideal for what I require. I like the fact that the handle does slide off, so I can use it with a small socket set that I have.
Bought this after struggling with a normal screwdriver. Should of got it before I started changing my chain rings! Good value and now lives in my Icetoolz tool kit.
A bit cheap, but does the job
Not a bad tool, could do with having slightly longer teeth to sit in the nut better. Seems to work best if you remove handle, mine slid off pretty easily, and insert it into bit holder of a socket wrench. Holding the socket wrench then allows you to keep the pressure on the tool, holding it in nicely in the the nut while you tighten the bolt up with an allen key from the other side.
Delivered from Merlin very quickly, even out to the Channel Islands.