CURT 42225 1-7/8, 2 and 2-5/16-Inch Chrome Steel Switch Ball Set, Up to 8,000 lbs. GTW

Update:So nearly two years later, this system still works great for me. Used it to haul a 18' trailer over 300 miles to move house, for hauling building supplies about a half dozen times or so, and to haul firewood about 2000lb at a time last winter.I had to take a little sand paper to the grooves because I let it sit out over the winter unprotected and the ball didn't want go back on, but it only took a minute to fix, and it was really my fault for not taking better care of it. All the balls swap on and off without a hassle. Just keep it greasy or oily and you won't have a problem.Original review:Background: I bought this for my 2000 Durango (aka Dr. Derango / The Dr.) because the previous owner(s) let the hitch rust-weld itself into the receiver. I'm sure I'll find a way to rip it out some day, but in the meantime I just wanted a quick change system to pull things without a lot of hassle.The good:No moving parts: The Reese system uses too many little parts that move (springs, ball bearings, etc) that are just asking to gum up. The Reese I bought before this was defective out of the package, and the locking bearings fell right out.Good design: It should be virtually impossible for the ball to pop off thanks to the clever groove pattern. The ball itself would have to break before it came off the post.The bad:Tight fit: Well, this isn't inherently a "bad" thing, really. There is little or no slop between the ball and the post. Good for stability, yes, but I could see it binding a little in a cold environment. Keep your spray lube handy and you should be good.The ugly:Nothing ugly: This set looks and works sharp.Other thoughts:Remember to take the ball off when not towing. It may be impossible for the ball to come off with a trailer locked on, but nothing stops it from hopping off down a bumpy road, or into a thief's pocket in a parking lot.

If the ball is not under the weight of a trailer, it falls out of the groove. If I am not mistaken, this could lead to the ball coming off at an in opportune time.

But shows rust very quickly

Simply ingenious! One shank, three balls - no more switching around between the 2" and 2-5/16" balls. The best part is, no tools, just greasy fingers :-)

Very awesome,so easy to make chang or ball size, very simple and quick

Perfect. I like the pin free design. One less thing to lose.

I like the versatility of being able to change hitch ball size so quickly.

I had my doubts that this would work as advertised, but it really does - don't need to carry multiple hitches anymore. Solid, heavy duty design.