Practical product, both for assembly (adapts to all types of rail. I bought it in addition to a simple trolley, without moving. I recommend this trolley because it is good value for money.??

Runs like clockwork.

Very satisfactory in all respects!

Once assembled you notice that everything is a little too loose, it could be improved with a precise turned pin, in order to eliminate air between the various thicknesses and the passage holes, the chain can come out of its seat easily, nothing that with a few modifications would not be possible can be fixed, but being new I would have expected a little more, I will have the opportunity to test the precision of the movement, it seems very fast in moving, I hope it is precise, the quality for the price seems adequate to me, good indeed