First you will receive a complete set of metric wrenches from 8 to 19 mm. No missing 11 or anything like that you can get elsewhere for this price. Screws can go through a wrench. This also has the only problem I had with the wrench. The head needs enough space around the bolt/nut to fit a wrench. So if you have a particular bottleneck, it may not fit. The price made me want to try it. The quality will make me want to look at other things I can buy from the manufacturer. The tool is well made, the simple ratchet appears to be well made and actually has some lubrication. The various bits and socket adapters are also well made and durable. I expect to be able to use this for years without any worries or bugs.