We use the Lynx Levelers and often top the stack with these. At storage yard, we top the stack with one of these so our hitch-leveler has a flat surface. At camp, we may top the stack of levelers with one of these, and use the other three for our four stabilizer jacks - use one leveler for the fourth jack. These make it quick to not need to line up between the circles on the Levelers.
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