
This may be a great product but you need to change it to make it work properly. Once installed, they tighten easily, but the nut on the bottom will start to stretch the rubber. As it stretches, it weakens and won't hold up. I'm going to make a washer out of wood to keep the nut from turning. **UPDATE** I put a metal washer between the plug and lock washer and now it works great. They were installed within a few weeks and are still very strong. If anyone from this company reads these reviews please add some pucks for it in the future.

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