Review on 🚂 CNCCANEN Linear Rail SBR12-1300Mm Guideway 2Set with 4X SBR12UU Bearing Block, Fully Supporting 12Mm Shaft Rod by Hesham Peltier

First off, for all the people who think they're 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.