Creativity Upgrade Y axis Linear Rail Guide Kit MGN12H 300MM Length for Ender3 V2/Ender3 Pro 3D Printer

Went with this solution because it supported 2 rails on the X axis. Easy to install. Took some time to set the alignment but I used my calipers and not the printed guide. Would buy it again.

I really wanted this to work. It seemed like a nice easy solution to add linear rails to the printer. I think that the problem comes down to this doesn't meet the quality requirements to put two linear rails in parallel. All was well until I tightened everything down. Then the bearing blocks bound up and were hard to move on the rails. I tried many different combinations of order to tighten the screws but nothing really worked. I gave up when I put a straight edge across the horizontal faces of the adapters while they were attached to the blocks and rails. I could see light under parts of the straight edge meaning that the two faces were no co-planer. When everything is tightened up, it puts a bind on the bearings. Maybe some people luck out and get the to work but I can't so they are going back.

Works great and easy to install. Bearings are a little rough at first.

The instruction are listed at the bottom of the Amazon product page. I was expecting printed instructions. Also the product page lists printing the stl from the "official website," but no link is provided. I was able to make the kit work, but it does take effort to make it work for your printer. I also found several youtube videos that were able to help and provide clear instructions.

overall installation experience is not as bad as others say. I was having issues where the included 3d printed bracket for the stop, was short as well and the bed would run into the motor. after staring at it for about an hour, I realized my bed was backwards so I rotated it 180 degrees amd it fits perfectly.Using on my Ender 3v2.Also needed to lubricate the rails since they felt rough.

The media could not be loaded. Easy to install, the rails are smooth and my print bed doesn’t wobble anymore. Definitely improved the print quality. First time installing rails, I hope they last long and require less maintenance. Happy about the product.

Both rails came looking good but the carages are a complete joke both of them were missing bearings so it would snag and catch at random spots and would not roll smoothly.... 10-15 dollar product

This kit was really easy to install. This is so much better than the stock setup!