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10 bulk blocks interlock to 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

Victoria B.
10/15/2019
Your motorhome may be over the weight capacity of these leveling blocks. The blocks are safe up to a 40,000 Gross Vehicle Weight.

Denny
10/4/2020
the second set I got seems to be stronger and will support the weight of my truck better. I think the heat was what heart the blocks before, track temp was 152F. They have been working great this season.

Douglas
9/5/2019
A year later, still working fine. With respect to my previous comment about the stabilizer feet, I find that by angling the blocks I can get them to extend to the end of the stabilizer feet, and have had no issues doing this for the past year. 2X4s under the blocks provide a stable base. Keeping the bottom of the plastic blocks out of the sandgravel is a must if you want them to stack, otherwise, the weight of the trailer forces gravel into the spaces in the blocks. They also flex and warp under the tires unless you have a solid base e.g., wood under them. Eventually, they seem to straighten back out, but stacking isnt always smooth right after use under a wheel. We use them all the time, including in the driveway. Way easier than having an assortment of wood blocking. Some blocks are starting to fade from sunlight exposure, but so far, no failures. Will probably buy more in the future.

Melissa
11/16/2021
Liked them so much we bought more
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Dale
6/20/2020
Great! Use them to support tongue jack all the time trailer is parked. No cracks, still solid, supports about 500lbs. Bought cheapies & wasted my $ prior to these.