2Pcs SBR20 Linear Rails Guide Shaft Rod L300-1500mm + 4Pcs SBR20UU Block Bearing
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SBR Fully Supported Linear Rail Shaft + Linear Motion Bearing Solide Block Set For CNC Perfect for your CNC projectSuits X, Y, Z axis Length: L300-1500mm Package Included:2Pcs linear rail with 4pcs SBR20UU Aluminum support rail with pre-drilled holes for ease of mounting No more unwanted errors in your machining work The shaft is case hardened. If you use normal steel shafts, the bearings will cut them up in no time. So make sure what you buy is case hardened!
On 06-Mar-18 at 19:37:10 GMT, seller added the following information: