Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Hunting & Fishing | Tackle Storage Monitors two (2) separate areas

Monitors two (2) separate areas simultaneously

Double Shielded

For extended outings

Color: Black/Grey

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

Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Hunting & Fishing | Tackle Storage Monitors two (2) separate areasSeries 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