I was a little unsure if this kit did infact have X2 1500mm rails...why? because dispite the discription and pictures showing x2 rail the package content box lower down the page states it only inc's x1 1500mm rail...
I contacted Vevor support (but placed an order before they replied becuase i need x2 750mm rail's any how so this would work for those) and their staff confirm that the package would only have x1 rail.....seems they where wrong becuase my order arrived today and im happy to say that it does infact contain X2 rail 1500mm & X4 carriges.
Railes are stright and carriges seem to move feely (you can never tell until they are fully cleaned and reoil'ed) and everything seems to be high quality, i'll see if i can update this review once they are fitted to my CNC.
Thx Vevor
Packing could be better as these not much inside holding the rails to stop them moving about.