GigaCraft Furlers are designed for the standard furling of sails with a straight luff, suitable for dinghy sailing boats and other small sailboats alike. With the tack of the sail attached to a furler and the head of the sail attached to a top swivel, the sail furls along the entire length of the luff. Designed with stainless steel ball bearings, all furlers can greatly increase the smooth for high-load performance. Manufactured with durable Grade 6061 T6 aluminum and stainless steel , the furlers can hardly be corroded by salt water.