I got these casters for a small greenhouse that I wanted to put on the porch but can still move. I wasn't sure about the resilience but I can say they roll very easily and snap securely! I assembled the (very heavy) base and greenhouse separately, but the greenhouse itself is very light. I built a base in the backyard shop, mounted the wheels on it, and pulled the chain through the tall grass to the porch. The journey is not short and it rolled very easily. I suspect the base alone probably weighs around 200 pounds. With everything packed inside, it rolls down the concrete porch with ease. It's been a few weeks and I don't see any wheel deflection. When locked, the casters will not spin or roll. It still moves slightly when I unlock it. I am very happy with them!
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