VEVOR high-quality SBR linear guide rail includes 2 guide rails and 4 slide blocks. VEVOR Linear Rail 2Pcs SBR12-1000mm Rails 4Pcs SBR12-UU Blocks Aluminium Bearing. VEVOR Linear Rail 2 SBR20-1800mm 4 SBR20UU Bearing Blocks Slide Steel Guideway.
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