2PCS SBR16 Linear Guide Rail Slide Rail 300-2000mm +4PCS SBR16UU Bearing Block
Model: SBR16. Rail Shafts:4PCS SBR16. Bearing Blocks: 4PCS SBR16UU. 2X SBR16 Linear Rail + 4X. SBR16UU Block Bearing. Perfect combination of the main axle bearing rail and aluminum alloy support, which nicely stabilizes the original rail.