Shock Cord w/Double Roller (Pair)Our Shock Cord with Double Pulley Block easily attaches to your boat and helps provide consistent tension to the halyard lines. With a double roller system, dual rigging and smooth halyard movement is a snap.Features:12″ of shock cordShrink wrapped endsCorrosion-resistant hook claspsSold in pairs1-year limited warrantyThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.