Our range of 4mm control lines designed to offer lines that are suited for each of the control line systems. From a performance perspective, we recommend Robline Polytech for the outhaul and kicker as Polytech provides durability with flexibility. For the downhaul, Polytech also works well, but if you want greater durability choose the slightly stiffer Marlow GP78 or Marlow's new 'gold standard' Elite 3 for the best durability. If you want more information on our secondary lines and how to select which is best for you read our article on selecting secondary lines. All prices are per metre.