Series 15 Ball Bearing Block, Double

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Mfr # RF15202. Series 15 Ball Bearing Utility Block - Double, Loop Head. Features: Smallest and lightest ball bearing block available. Precision molded acetal sheave running on sta inless 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 Applications: Dinghy control lines. Vangs, cunninghams and tweakers. Shock cord tensioning systems Materials: BB sheaves: UV stabilized acetal. Ball bearings: Stainless steel. Cheeks: Grade 316 stainless steel. Show more