Real wheels on caster wheels are probably not designed for load capacity. Once you reach at least half the weight you will find that the movement is not smooth and feels like they are tied up or have "invisible locks". I had them under a small wooden table. I admit that the total weight of my table for four casters was close to the maximum, so I installed 6 of them (and the small table was level at the bottom). 4 reel wheels literally broke into pieces after rolling multiple times. Table. The metal components hold up and aren't a problem, the wheels themselves are flimsy/a bit brittle. Over the years I've increased the weight limit of other reels I've bought elsewhere and I've never seen Amy reels do what these did. Just be very careful when stowing anything heavier than 1/2 the rated capacity. If they don't roll smoothly after installation, the caster wheels are likely to fall apart when you or even a child put your weight on them. Photos to find them now.