Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Marine Navigation & Instruments | GPS - Track Plotter Reverse Polarity Protected

Reverse Polarity Protected

Unique stainless steel shaft with bushing and twin Nitrile “O” rings for greater protection against water penetration

this allows you to quickly change rod holder positions with a simple twist

Material: Chrome zinc

or plug your MP3 player into the 3

Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Marine Navigation & Instruments | GPS - Track Plotter Reverse Polarity ProtectedSeries 40 Ball Bearing Block Single Upright Lead Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Precision molded Acetal sheaves running on Acetal or Torlon ball bearings provide high performance & low friction. The 2 stage ball bearing system provides consistent performance over the full load range. Applications: Typically used for halyards at the mast base. Materials: Acetal ball