I have a couple of wrenches like that. Made by gear wrench and snap on. They are handy as hell. To the OP, certain tools may not be “needed” to get a job done but sometimes they save so much hassle and frustration that they are worth their weight in gold. Attached is a pic of one of my wrench drawers. Each type has its place and can save a lot of time in the right application. Some let me sneak in without taking a ton of stuff off or they allow more work room in tight spots etc.