2Pcs SBR20-1200mm Slide Linear Rail with 4Pcs SBR20UU Square Type Bearings Block for Fully Supported 20mm Linear Rail Length 47.2 inch(1200mm)

When I received these rails, I was very impressed with the quality material used for these pieces! These are perfectly machined and not made with flimsy, substandard materials. You just don't see this type of quality much anymore. They easily handled the load that I used them for (but rated much higher) - with very smooth gliding action. I can't say enough about the quality of these pieces - and at an affordable price! Would highly recommend these rails for most any application where quality is critical.

Exactly what I needed for router sled. I had an issue with 2 of the bearings, wrote to customer service and had replacements in less than a week! Linear rails are heavy duty and router is riding smoothly. Full size Makita very heavy! Totally happy I finally ordered these!

Works great

Individually the trolleys move weirdly, but all 4 connected to a jig they move smoothly. Fast delivery. Mine were 7½ feet long, packed in bubble wrap in a flimsy cardboard box. Shippers treated it gently. Dumb luck I think.

I bought these and some other rails to flatten some slabs from a tree I cut up. No complaints here. I bought a Bora Centipede table and screwed them down to 1/2" plywood. Unfortunately, the plywood bowed. I recently purchased the Bora t-track tabletop mdf panel and I am currently trying to figure out a way to install this in the t-track. I want to mount the rails in such a manner that I don't have to screw into the wood and I can add spacers underneath to elevate the rail.

Built a router flattening jig from these. On pair of the rails works well, but the other pair gets stuck and I am now finding little ball bearings on the floor. Do not expect it to last for a long time. It is probably not designed for all the dust produced by the flattening process. When it stops working completely I willProbably look for an alternative.

These rails were better than I expected. Sturdy, stout, smooth. Really like these and will buy again.

Buy from these guys and Gals, great service and products