VEVOR Linear Guide Rail Set, SBR20 1200mm, 2 PCS 47.2 in/1200 mm SBR20 Guide Rails and 4 PCS SBR20UU Slide Blocks, Linear Rails and Bearings Kit for Automated Machines DIY Project CNC Router Machines

Beautifully engineered and just what i needed and purchased more.

Excellent quality and provides a lovely stable base for any tool that needs to move in an 'x' or 'y' axis.

Nice for the price.

Really good

I used it for my table router sled, beginning word very well, but a few times put in , take out start small problem, 2 small bearing fell out but I put it back and all worked well. Just I don't know why so easy to fell out

As expected

I used these to make a router sled. They did the job without any issues.

Very poor constructed materials used and broke after first use