I recently purchased a set of casters for my business needs in the industrial and scientific field. My analysis of this product showed that they were meant to have a heavy-duty capacity, but unfortunately, they fell short of my expectations. The product's construction and durability were subpar, resulting in frequent breakdowns and needing repairs more often than expected. The only pro was the price, which was reasonable, but the cons of this product outweighed it. I would not recommend this to anyone looking for reliable, heavy-duty casters.