OrangeA Linear Rail 2PCS SBR20-1500mm Linear Slide Rail 4PCS SBR20UU Bearing Block CNC Kit Linear Rails and Bearings Kit CNC Rails Linear Rail Set forAutomated Machines and Equipments

I used these for storage area bottom of travel trailer. I made a wooden box and use these to roll out and in. I made 2 boxes different sizes and easily roll out from each side

Product as described well made no issues

Why did you pick this product vs others?:Good product. Rails very rigid and solid. Rollers smooth. Only complaint is it should have came with machine screws. I found it difficult to determine the size and find what was needed. This made the purchase incomplete.

After receiving this item, my daughter and I built a couple of sleds to mount on these rails and were very pleasantly surprised on the easiness of how well the slides work on these rails. Top notch product and if you can build your own sled for your router, this item will save you hundreds of dollars.

I have hunted all over for the correct size screw for the rail blocks. Asked Rufus and got an incorrect answer of M5-0.8 or #10X32. Finally went to an industrial supplier of nuts and bolts and the guy looked at it and knew exactly what I needed.The correct size is M7 but I didn't get the thread count.If you need bolts for the bearing blocks visit an industrial supplier! Home Depot and Lowes can't help. Checked several national hardware stores but they didn't have them. Good luck!

haven't had a chance to use but i think it will be good

Hefty metal and a great price but machining is so sloppy that the base does not sit flat and the rail is bowed. Not a single drill hole has been chamfered and so there are significant burrs everywhere and that is probably the reason it is neither flat nor linear. This is supposed to be a precision peice - it should at least lay flat and not have visual bows. It also just generally appears used and banged up. And the shipping was terrible - box was torn open. The packaging is just not appropriate for a product this hefty and something that is supposed to be precise.UPDATE. Ordered a replacement set and while the packaging and machining was slightly better the rails still aren't anywhere near straight. They are so bowed you can see the problem without a straightedge. I find it hard to believe there are any positive reviews.

These are smooth gliding rails, the holes are 1 3/8 or 35mm apart on the sliders, however the holes on the rails are slightly narrower.. for me I decided to notch and or drill my own holes where needed for my mounting needs. I bought two lengths.