@us_connie That's called, among other things, a "lunchbox locker".
It's not a fix. It's done to cause both axles to rotate at the same rate under all conditions. It's the cheapest way to get a locking differential.
You can't really drive on the road, but it's intended for off road.
@TheElliot__ Arbitrary questions get arbitrary answers. It's not like you need this done on your rig, your just dumbing up clicks or something retarded. You do you, I'm not like you. But if your really want answers I'll give them to you.