Convert-A-Ball 900B Nickel-Plated Shank with 3 Balls - 1"

I don't know what benefits it drawbacks would help you choose between this or the tri ball hitches, they both give you all 3 ball sizes and they both work great! If you like the idea of using this better, then get it! Doesn't hurt to keep the pins clean and lightly greased.

If you tow Multiple Trailers you truly need a Convert A Ball

The convertaball system just works. Once you mount the post just push the pin out of the correctly sized "orb", put it on the post and shove the pin back in. Pin is retained so it cant fall out. For occasional use on a mix of rental and borrowed trailers, this is almost a must have.

The ability to change ball’s works well for different trailers.

I have a few small trailers I use and they have different sizes so this makes it super easy.I saw a review where the man claimed this product bad because you could not torque it properly with no hold one the top. But as pictured, you can stick a screw driver or anything longer in the hole at the top. And torque the nut properly.

Bout this item to keep from having different hitches. Now I have on hitch and can tow any trailer with a change of the ball. Very happy with product!

I have used these for over 20 years. Very handy as I have several trailers and its easy to swap out the ball. When they wear out, I just buy a new one. I've heard others complain about the pins rusting in and not being able to change them It's true, if you never change them or don't keep the pin lubed or if they are always on the tow vehicle, they will rust in and you will not be able to change it. I had this happen on my oldest set. Not a product issue, it was my own fault.

Easy to use