4pc Heavy Duty 2-1/2 Inch 175 Lb Platform Caster Wheel Set - 2 Swivel + 2 Stationary

Considering the cost, these are pretty great. I'm using these on arcade machines of about 250lb in weight and they feel very solid. The free casters even have a simple seal to keep junk out of the bearings. Most cheap casters I've tried lack that.The only problem I have with them is the fixed wheels are not well aligned to the mounting hole pattern. As such, mounting them to an existing hole pattern will have them pointing about 5° off to one side. There is enough play in the shaft that it doesn't seem to affect anything, though.I didn't actually measure the diameter before installing them where I can't really get to them, but they felt consistent with the more expensive 2.5" casters I've used.

no problem with seller but the casters, they were a different story they reeked of creosote and are unusable. the wheels have to be deep cleaned to get the stank off of them. i would not suggest to anyone that they purchase this product as its just inferior junk.

size is wrong and not any good for chair I used it on.. split my chair's leg... just put them in storage.