Wheels are much better than the ones I'm replacing at the moment. The only problem is that the Supplied inserts are cheap fake EZ locks Two broke and screwed them into the hole Luckily I had the same size EZ locks to replace them with.
Pros
SIZE AND LOAD CAPACITIES: Each roller carrier can support up to 50 lbs. 2" wheel dia, 3/8" x 1" shaft (Dia x L), 16 thread