*[http://www.roton.com/Mating_Components.aspx?partnumber=60758&#PN 1/4 - 20 Right Hand Acme Screw] (Roton) You need about one meter. Order 40 inches and cut to fit. I ended up ordering two to make Roton's minimum order, and was glad when I screwed up cutting my first one. | *[http://www.roton.com/Mating_Components.aspx?partnumber=60758&#PN 1/4 - 20 Right Hand Acme Screw] (Roton) You need about one meter. Order 40 inches and cut to fit. I ended up ordering two to make Roton's minimum order, and was glad when I screwed up cutting my first one. |