These casters may be expensive but are well built and very strong when the legs are extended. The leveling/ratcheting feature works well even under heavy loads - time will tell if the hardware holds up. I used a 4' x 7' build/unload table and installed the casters with Ez-Lok 329-801 threaded inserts into 4' x 4' pine legs. Thanks to the leveling function, I was able to adjust the height of the table exactly to the height of my table saw. Overall, these videos are highly recommended.
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