TACO Marine Cord w/Double Roller Pair Shock. With a double roller system dual rigging and smooth halyard movement is a snap. Specifications for TACO Marine Shock Cord w/Double Roller Pair: Manufacturer: TACO Marine Size: One Size Color: Black Quantity: 2 Features of TACO Marine Shock Cord w/Double Roller Pair 12" of shock cord Shrink wrapped ends Corrosion-resistant hook clasps Package Contents: TACO Marine Shock Cord w/Double Roller Pair TACO Marine COK-0022-2: Cord w/Double Roller Pair Shock