<h3>Key features</h3><ul> <li>Complete Linear Rail Kits: 2pcs 1500 mm long(59 inch) SBR16 rail shafts and 4pcs SBR16UU blocks and 4pcs fixing rings.Sliding blocks are used cooperatively with rails, smooth sliding provided by the inside linear bearing</li> <li>High-Quality Steel Material: The shell is made of metal, durable for use, Extend the life of the shaft and the machine.Chrome plated surface, beautiful, rust proof, more durable, with high hardness</li> <li>Premier Linear Guiding System: Perfect combination of the main axle bearing rail and aluminum alloy support, which nicely stabilizes the original rail. Industrial-grade standard SBR block, with a high precision linear bearing inside.</li> <li>Easy to Install: Used with aluminum fixing rings, it is more flexible,aluminum alloy support rails with pre-drilled holes are easy to install.does not require maintenance</li> <li>Wide Application: SBR16 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>Features: Standard processing enables high interchangeability. High accuracy and stable performance, smooth movement, low friction, high rigidity and long service life. The shell is made of metal, durable for use, The linear guide rail is widely used in automation machines such as CNC routers,Lathes, machine tools, bending machines, laser welding machines, etc. Specification: Type: Linear rail set Performance: Smooth movement Performance: low noise Rail shaft length: 1500mm/59 inch Rail shank diameter: 16mm/0.62 inch fixing rings diameter: 16mm/0.62 inch Package Contents: 2 X SBR16-1500mm linear bearing rail. 4 X SBR16UU bearing blocks 4 X rail fixing rings</p><p>Free shipping included. 30-day hassle-free returns.</p>