Ronstan Series 15 Ball Bearing Utility Block - Upright Lead Block - RF15171 Digital Video Recorder Never use petroleum-based grease

Never use petroleum-based grease

and buff immediately with a microfiber polishing cloth for an instant

Because the R109 has a bandwidth that covers a continuous frequency spectrum

Rim diameter: (inch) 14

Ronstan Series 15 Ball Bearing Utility Block - Upright Lead Block - RF15171 Digital Video Recorder Never use petroleum-based greaseSeries 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