["Linear Rail Set: This set included 4 pieces of SBR20-59 inch linear rail and 8 pieces of SBR20UU block bearing.","High quality: Linear rails for CNC parts are made of carbon steel. The linear bearing is made of high-quality bearing steel with an aluminum alloy housing. The product surface is chrome-plated, beautiful and rust-free, more durable and has high hardness.","Product advantages: Durable construction for long-lasting performance. This linear bearing is durable and sturdy, which can extend the life of your machines.","Easy assembly: Support rails made of aluminum alloy with pre-drilled holes are easy to install. The linear optical axis made of stainless steel can control the linear movement of the bearing.","Wide application: Can be used in automatic industrial machines such as robots, calculators, automatic recorders, precision printers, etc."]
