Customer Reviews for VEVOR Linear Guide Rail Set, SBR12 1000mm, 2 PCS 39.4 in/1000 mm SBR12 Guide Rails and 4 PCS SBR12UU Slide Blocks, Linear Rails and Bearings Kit for Automated Machines DIY Project CNC Router Machines

Have ordered several of these. Most of them are great for what they are. Have had to retap a couple of the bolt holes, but for the cost they are great. Wish the mounting holes were in more consistent locations. Fine for wood mounting, but if planning on an aluminum frame it makes planning difficult.

The rails are alright, seem hard enough even though it doesn't have the hardness rating officially on the product information so only time will tell on the reliability. Theres a little bit of deflection when measured parallel to each other, less than .010 inches total deflection over 1500mm which is fine for what I plan on using it for. Not a cnc but a wall mounted hybrid circular saw panel board saw. Its more than accurate for woodworking and I doubt it will ever meet lateral forces, maybe some small debris. But that is all from your friendly neighborhood cracker and his simple cracker machine. Why would you put that at the end of your product description, what's wrong with you, lol. I don't know, I just gave a racist 5 stars because the price is good and the product is good but maybe try and hide the racism a little bit, c'mon.