SMC CY1L20H-350B-J79L Cy1L, Magnet Coupled Rodless Cylinder MSRP: Now: $653.85 Was: Rodless Cylinder, CY1L, Magnetically Coupled - Ball BushingThe CY1L Rodless Cylinder - Magnetically Coupled uses industrial strength magnets located in the piston and external carriage to form a... CY1L20H-350B-J79L