CNCMANS MGN12H 300mm Linear Rail Guide with MGN12H Bearing Steel Carriage Block, Mini MGN12H Linear Guide Rail for 3D Printer and CNC Machine (MGN12-300mm H-Type)

Good quality, smooth motion, no slop or play and packaged like a tank.I’m going to buy more for my old delta and the y axis on an ender.

Good quality rails but two of the sliders are super tight - binding heavily. I know it's the sliders because I have a third slider that works perfectly on all rails.

I recently installed the MGN12H 500mm Linear Rail on my LumenPnP X axis, and I am thoroughly impressed. The rail is incredibly sturdy and provides smooth, precise movement, which is essential for accurate positioning. The installation was straightforward, and the build quality is top-notch. I appreciate the attention to detail in the design, which minimizes any play or wobble. Overall, this linear rail has significantly improved the performance of my machine, making it a great investment for anyone looking to enhance their CNC , 3D printer or pick & place. Highly recommended!

Good quality and smooth operation, one arrived a little scratched but seems superficial, no issues with friction or anything. Used on custom 3d printer, exactly as designed and runs really nicely with a little bit of grease.

Great price runs fine

The media could not be loaded. Complete waster of time, it's bowed by1.5mm in every direction. Do not buy!Would give 0 stars if I could.

Bought 3 in total. First one was perfect after cleaning and lubrication - would've given a 5 star. The other two had minor binding and of those two, one was slightly bent (~0.5mm). Spent some time to minimise the bend during mounting but otherwise works well. All 3 arrived with the carriage on the rail, which may have caused/worsened the issues during storage and transport.

Seller was quickly to attend. Seller is responsive and sent replacement for the cartridges that rather sticking. Replacement are now much slidey-er. When service is on this level is what made me come back and purchase more. Thanks seller!