The Anti torsion cable is the link between the 2 elements of a furler : the swivel and the drum.
In a perfect world, the Anti torsion cable must transmit the winding forces from the bottom to the top (1 turn of the drum = 1 turn of swivel) These cables are usually supplied with the sail (in the sail / luff for the most part or outdoors for asymmetric spinnakers The range of anti-torsion ropes and cables is very wide. We have chosen to offer the Marlow Pro Drive Anti torsion rope as standard for the smallest furlers (KSF1 to KSF5) but we work with all brands. Beyond 5T and / or 20 meters in length, we recommend Anti-torsion cables (Future Fibers, Navtec, SoftRig, Armare,..)