["Included: 2 x linear rails + 4 pieces SBR12UU + 4 pieces stop rings.","The shell is made of metal, durable for use, extending the life of the shaft and the machine.","The product surface is chrome-plated, beautiful and rust-proof, more durable and has high hardness.","No stick-slip effect, less heating, less drive power required.","Used with an aluminum stop ring, it is more flexible, aluminum alloy support rails with pre-drilled holes are easy to install, requires no maintenance."]
