You have to raise then support said car. Read the owners manual and or search the interweb for jacking points. If this is a front engine rear drive car there should be one or more substantial cross members in the engine area. These can be jack points but you need to verify. The pinch weld points...
In my automotive and light truck experience I like no flex when I have a flex socket and flex with a non flex socket. So maybe a locking flex replaces two ratchets with one.
For those of us diyers we don't have much of a leg to stand on when complaining about snap on pricing. Sure if they cut their prices by a third or more the product would fly out of their trucks. They make a lot of good tools, every day tools and once in a while tools. But much like other high...