Well made product and runs smooth.If your looking at buying one always go up one level for the weight so you have a good safety factor when working with loads.
Haven't used it yet, but it appears to be well made, smooth glide and very heavy so should tolerate the 2 ton weight. On the down side had to wait over three weeks for delivery.
I used 2 of these to attach chain falls to a 4 inch I beam. The beam was bolted through the top, and the smaller rollers allow it to travel without hitting the bolts or nuts.
Installed on a new Gantry Crane. No instructions or paper work on how to install. Would be nice to know how tight the adjustment bolt should be. Works good.