I can tell it is a solid socket tool just by the weight and after trying it out on a variety of screw/bolt fasteners. For most socket jobs, it is easier to have this in your pocket than carting around a complete socket set and trying one socket after another to find the correct metric or standard inch.

I cannot vouch for its long-term durability at this time – each test worked fine and there was no pin distortion or other issue. I tend to tighten things then give them a little more. I will update this review if I encounter a durability problem in the future.

I found that it worked best from the bolt head end rather than the nut end since the pins have a limited depression depth.

This socket goes from 7-19mm which insane to think that this one little tool can go to that size. Firstly, it does actually work really well and will fit into nuts to loosen with no problems. I have used this on all sizes of nuts and can confirm that it does fit and will loosen and tighten bolts with ease. Now, the socket is on the bigger side so for smaller areas and spaces it will most likely not fit so that is where this tool will not work for you. This is more for using it in open spaces where you can easily get to the bolts or whatever you are trying to tighten.

This socket self adjusts so when you use this on a bolt, for example, it will contort to fit that shape and will be able to tighten or loosen. It feels very great quality and durable so this will last in your tool box with no problem. It is great that you do not need to pick a socket if you have this tool and can just stick it in your wrench and it will fit the bolt no problem. Great quality tool for the price, I would highly recommend this to any DIYer!