Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Hunting & Fishing | Tackle Storage Ring ID: 3-9/16"

Ring ID: 3-9/16"

12" Smooth rolling wheels offer substantial dock cushioning and feature molded-in valves to adjust the level of firmness

Double Shielded

Anti-airlock feature allows pump to clear trapped air in rough water or when boat is anchored

1 x 1 360 Panel System module mounts any M2 Monitor and matches existing 360 panels

Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Hunting & Fishing | Tackle Storage Ring ID: 3-9/16"Series 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