<h3>Key features</h3><ul> <li>The linear guideway rail inculde 2 pieces of linear rail SBR12-1300 mm/51.2 inch long and 4 SBR12UU blocks, sliding blocks to be used cooperatively with rails, high precision and easy to mount dismount</li> <li>SBR12 linear rails are made of good bearing steel and aluminum alloy, surface chrome plating treatment beautiful anti-rust, high hardness, more durable</li> <li>Industry-standard SBR block with high-precision linear bearing inside. The adjustment handle can adjust the tightness of the slider, standardized processing, ideal for positioning the guide rail</li> <li>Perfect combination of main axle bearing rail and aluminum alloy support, which nicely stabilizes the original rail. Industrial-grade standard SBR block, with high precision linear bearing inside</li> <li>SBR12 linear rails apply for DIY CNC routers, lathes, machine tools, bending machines, laser welding machines, etc. Also applicable for large-scale transmission equipment, including industrial robots, cracker machines</li> </ul><p>Free shipping included. 30-day hassle-free returns.</p>