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Interlocking blocks stack to different heights and can be positioned beneath jacks, stabilizers, or RV wheels to add enough lift to level your rig. Durable polyethylene construction.
Features:
Specs:
Stackers Blocks and Chock
Stackers leveling blocks can be stacked directly on top of each other for supporting a trailer tongue, or you can stagger the blocks to create a ramp. Not only do the individual raised squares interlock with those on the block placed above it, but the built-in handles also interlock with these squares for a more sturdy and streamlined design. The Stackers chock (A10-0922 - sold separately) can then be attached to the leveling blocks to help stop your trailer or RV from rolling off the Stackers.
Ratings & Reviews

Michael
12/12/2018
I have been absolutely thrilled with all 3! They have all made my life much easier when it comes to parking and securing my boat. And they all have held up to the elements and are in as good of shape today as they were when I purchased them.

John
1/22/2022
They are awes! I use them to level my RV and to strengthen my entrance steps.

Maurice
4/5/2023
Thor Compass has stabilizers rather than levelizer jacks, so these are used under each to aid in maintaining a balanced unit. Unlike items we have replaced such as ramps, these continue to work well.
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Big D.
12/6/2021
More the merrier they are working well even under pressure. They are the perfect size for washing them in a 5 gallon pail should they get dirty during inclement weather.