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Boot cinch zip
Removable snap hook lets you increase the lifespan of the product by replacing the webbing only
Designed using state-of-the-art technology
NMEA 2000 connectivity enables easy integration with compatible chartplotters
Removable becket allows use of pre-spliced lines
Allen 40mm Dynamic Triple Block And Becket Boat Butterfly Boot cinch zip40mm Dynamic Triple Swivel Block with Becket. New for 2023. Made from high strength, lightweight glass loaded nylon and featuring Allens dynamic bearing technology for a high performance block suitable for keelboats and dinghies. 40mm dynamic blocks are perfect for use on main, jib and spinnaker sheets on dinghies and keelboat control lines. Bearings Dynamic blocks feature our patented bearing system which uses twin rows of stainless steel ball