Don T.

I purchased the ******* Hitch Ball Mount for my truck and RV. It has a rubber anti-rattle device included with it. Many people said that the rubber device didn't last long and replaced it with the set screw *******. I checked the E-Trailer web site and sure enough one of their techs said that the set screw could be used to replace the rubber device. Here is that question and answer:
Replacement Anti-Rattle for Curt Adjustable Ball Mount # C*******
Question:
Is there a replacement for the rubber anti-rattle. It is a poor design and does not last! Any suggestion?
Asked by: Rory C
Expert Reply:
In place of the rubber bumper included with adjustable ball mount # C******* you can use anti-rattle set screw # C*******. Unlike the bumper this set screw will thread in from the back.
Expert reply by: Michael H
After further research I read that the set screw could only be used with a couple of other hitch ball mounts. I also examined my hitch and determined that there was no way to install the set screw on the ******* from the rear as the directions for use state. I asked E-Trailer the question about the screw replacing the rubber device and here is their reply:
Expert Reply:
The Replacement Anti-Rattle Set Screw with Wrench for Curt Channel Style Adjustable Ball Mount # C******* is a set screw that is 1/2" -13 x 1" bolt. I reached out to my tech contact at Curt and it is not designed to replace the rubber anti-rattle plug included with the Curt Adjustable Ball Mount # C*******. The rubber plug was actually created because of issues with customers overtightening the set screw and ruining the threads on the anti-rattle so the rubber plug anti-rattle was the solution to the set screw issue.
Expert reply by: Jason S

Bottom line is that the screw is not compatible with the ******* even though the web site says that it is.
All that being said I love the hitch I purchased and will use it with the rubber anti-rattle device and get a new one if it fails. Also the response from E-Trailer to my question was prompt and cleared up confusion for me. Do your own research on any product and make up your own mind. E-Trailer sells quality products and I will continue to use them for my truck and RV needs on specialty products.