Seldén CX and Seldén GX are operated with an endless furling line running over a line driver drum. The furling line is preferably led all the way back to the cock pit and Seldén offer the Double Fairlead and the Twin-Cam block for a well-organized set up. A purpose made AT-Cable has been developed to secure the function of the system and as the performance of top-down furling is dependent on the torsional rigidity of the AT-cable, it is included in the Seldén GX furlers.