BENTISM 2PCS SBR20 1200mm Linear Guide Rail Slide Rail 4 PCS SBR20UU Bearing Block

from Cecilia J

These are fantastic rails for the price and are being used for a YouTube movie on building an automatic slab flattener. extremely flat, straight, and well-packaged to withstand cross-country transportation. I'll definitely purchase more.

from Keely

Most of us are aware of how inexpensive rails work. You're lucky if you get 1 out of 3, and even that requires effort. I was pleasantly surprised to find that they work flawlessly right out of the box. Straight and without any binding. Although they didn't really require it, I disassembled them t...

from Colleen & Nate

These seem to be smaller than those provided by other linear rail and carriage vendors; I suppose that's what happens when you use products that have been copied. They would probably function flawlessly if you purchased the rails from RellaBot, but they don't appear to function with rails from ot...

from Olwyn Jae Ojala

The six rods I received were all extremely strong and precisely straight. In contrast to the ones that came with my 3D printer, they have no flex at all.

from Jorge P.

Many of the reviews mentioned bent rods, however the ones I had were completely smooth and precisely straight. The diameter was exactly 8mm, which was pretty much everything you could hope for.