Ronstan Series 15 Ball Bearing Single Block with Loop Top - RF15101

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The smallest and lighest ball bearing block available. The Series 15 Ball Bearing Blocks feature stainless steel ball bearings in a 15mm sheave. Popular choices for dingy control l ines, vangs, cunninghams, or tweakers. A variety of configurations create many opportunities for applications. Smallest and lightest ball bearing block available. Precision moulded acetal sheave running on stainless steel ball bearings provide high performance & low friction. Single loop head blocks include an O-ring to separate running line from head lashing or fixing. Show more