SBR20-500mm Linear Rail Linear Rails and Bearings Kit 2Pcs SBR20 500mm Long Fully Supported Shaft Guide with 4Pcs SBR20UU Linear Bearing Slide Block Linear Guide for CNC Equipments

packaged good. real good lol. box was a bit banged up from the mail people. but the rails where protected inside the box thank god. they or great rails i am very happy. thank you. would buy again.

Used to build goose house opener with 18" lift, holding the two sides of big sliding doors in place. Initially, I tried to buy 1 inch U channel, but those rails are cheaper, stronger, and smoother.

RAILS ARE STRAIGH AND RIDGED .bEARINGS COULD BE SMOOTHER

The glides run true and can be adjusted for how tight they are on the rails.They worked great on my custom built piston ring file.

These worked great for my project!

Product was fine, but I am missing the end alignment dowels which wasn’t a big deal because I am not in a rush. Reached out to the manufacturer for resolution with no response. When you purchase anything a big part of quality is support. That’s why they received one star.

very hefty rails no bending under the weight of a plunge router and my weight reaching over the work piece. they a bit noisy and probably could use more grease but that would cause too much dust buildup. came with hardware screws and a stopper handle but still had to purchase more since they were to long for my application. as a side note i accidentally purchased the wrong size and were too short to complete the task but worked as advertised. very satisfied with this prodcut.

So overall I'm happy with it. It came with lots of metal flakes and was filthy. I had to wipe and clean it all up. The base is scratched up a bit, but that's ok. And the sliders need greasing. It's all pretty great, but 1 of the sliders gets stuck, so I need just that one replaced. There's no way to contact the seller. The only other option is to return the entire thing and get a new one, but I've done a lot of work cleaning and setting it up. So I guess that leaves the option of buying a second one, switching the bad part, and then returning it, but that seems like such a waste too. I wish I could contact the seller and ask for the single slider. Seller, if you see this, please contact me.