Review on CNCCANEN SBR12UU 12 600mm Linear Bearing Bearings for Improved SEO by David Romo

First, for all the people who think they are buying high precision CNC parts, kid yourself. There's a reason they're a quarter the cost of parts from Avid CNC or other well-known brands. They are cheap for a reason and should be treated as such. So if you want ultra-high quality, quality-assured engineering parts, buy them. Otherwise stop complaining. These rails fit my needs and the bearings are pretty crappy but for my needs I'll get them working. I also knew what to expect based on the price. If I wanted perfection, I'd spend a heck of a lot more than $40.