["Package includes: 2 x linear rails + 4 pieces SBR16UU + 4 pieces stop rings.","The shell is made of metal, durable for use, extending the lifespan of the shaft and machine.","The product's surface is chrome-plated, beautiful and rust-free, more durable and with high hardness.","No stick-slip effect, less heating, less drive power required.","Comes with an aluminum stop ring, making it more flexible, support rails made of aluminum alloy with pre-drilled holes are easy to install, requires no maintenance."]
