Size 4 58mm Plain Bearing Pulley Upright Block. The Size 4 Barton range of blocks has a 58mm (2 5/16") sheave. They are of rugged construction featuring high-grade molded side plates that are through-bolted and riveted for added strength and security. All load-bearing components and interior frame are from marine grade 316 stainless steel and both plain and ball-bearing sheaves are available. This sleek and versatile range is engineered for use on larger cruising and racing yachts and is compatible with our ball-bearing mainsheet traveler system. Suitable for up to 12mm (7/16") rope. Includes single upright block configuration. (Additional marketplace information: Model N04 150 / N04150. Item dimensions and packaging supplied in product specifications.)
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