Works great. Once assembled I turned the wheels back and forth by hand until they were fairly free moving then removed the rollers from the pins, inserted a little silicone lube in each pin hole on the roller then re-assembled and they free wheel almost as if using bearings.
The only thing I would change is either move the holes for the mounting screws so that screws can be used after assembly or put a big note somewhere that if you plan to use mounting screws -. Mount before assembley because the holes are beneath the pin/roller when assembled. And you should only take this assy apart as rarely as possible.
Radio Shack PLA