Linear Rail SBR12-800mm Fully Support Slider 2 Set + 4 SBR12UU Bearing Block Shaft Rod Guideway kit for for 12mm Slotted Bearings

I think it will work for what I need it for. Seems to be good quality maybe not 100% but will work for me. They did send the wrong bearing blocks so I sent them a message and they corrected that very fast. Will definitely buy from again.

I needed slightly different lengths. But they were back ordered so I got shorter ones and butted them together, passes over smoothly.

First off, for all the people thinking are buying super high end precision cnc parts, you are kidding yourself. There is a reason these are a quarter the cost of parts from avid cnc or other reputable brands. These are inexpensive for a reason and should be treated as such. So if you want super high end quality controlled engineered parts, go buy them. Otherwise stop complaining. These rails are good to go for my needs and the bearings are pretty crappy, but for my needs I'll make them work. I also knew what to expect based on the price. If I wanted perfect I would have spent a heck of a lot more than $40-ish.

Should be zero stars One rail was bowed by 2 mm. The other was straight. All the bearing blocks grind on the rail. No amount of lubrication or adjustment will Fox. Absolutely trash.