whats the difference between

[rickit]

the zinc and chrome plated hitch balls?is one better then the other?i am getting ready to buy one and see there are two styles,also do i need a 2 5/16 diameter? thanks rick

[Hitchhiker]

The shaft diameter is very important, it determines the rating. The ball needs to have a rating greater that the GVWR of the trailer you're pulling. Most heavier trailers take a 2 5/16 ball, lighter trailers can be 2". Personally, I'd pass on a chrome ball, it's just going to get all scratched up and the plating will scratch.

[wingnut60]

Borrow a 2 5/16" ball (it is stamped on the top) and see if it fits in the trailer--if not, you need a 2"--get the biggest shaft you can no matter which ball size you need.
Chrome/zinc--doesn't matter, get the cheaper one. Chrome is pretty, but it is always covered up, right? And lube it a little every now and then, and keep it free of dirt buildup--the lube will attract dirt.
Joe