6sets linear guide rail SBR20- 500/1300/1600mm+ SFU 1605 - 450/1550/1550mm ballscrew+BK12/BK12+ Nut housing + 3 Coupler for cnc 6 sets linear guide rail sbr20 400 700 700mm 3 sfu1605 450 750 750mm ballscrew 3 bk12 bk12 3 nut housing 3 coupler for cnc
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