Series 15 Ball Bearing Block, Upright Lead

Series 15 Ball Bearing Utility Block - Upright Lead Block. Features: Smallest and lightest ball bearing block available. Precision molded 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 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.