We use the caps on top of the Lynx leveler blocks for our stabilizer jacks. They fit perfectly on top, look great, and help protect the concrete/asphalt at RV "resorts" and also provide a wider footprint for the stabilizer jacks when boondocking.
We like ours for our scissors because of the large surface size for the scissor feet and the underside interlock with our levelers.
I've purchased a couple sets of these. They have provided a flat surface for the jacks to set on during stabilization. There have been times when the regular blocks have been either to much or to little to level out and these being thinner have provided that spacer. Unlike wood they haven't shown any signs of rot or cracking. They are very light weight and easy to store and clean.
I have been using your lynx caps on our 5th wheel for 4 years now traveling full time. Great product and would definitely buy them again. Strong and very durable.
Have not used them yet, we are sure they will work great.