I like this set. I got this for around the house and I’m glad I did. The sockets snap onto the spark plug. I like that. Each socket is made the same way which allows to socket to heap and seat onto the spark plug allowing for a more secure hold. Another thing I like about this set is how it has all the sizes you would need. All in one set that is in a case. That’s awesome. This set also comes with a universal adapter for a 3/8” ratchet. This also comes with a coupe 3/8” locking extensions. Those work ok. They are not the best but they do work. They do hold the socket and lock it in place. The only problem I have ran into is getting the socket off. There has been a few times where I had to play around with it in order to get it to release the socket. That’s why I gave this set 4 stars. The case itself seems to be pretty good. The latches work and holds the case shut. If you shake the case around and then open it up the sockets and extensions are still in place. If you work automotive or just work on a lot of small engines this would make a great set. I work industrial maintenance so I’m not always changing out spark plugs but I do enjoy having this set. It’s great to have everything I need in one place. Maybe in the future they can add a ratchet with this set that way you literally have everything right there.