Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Marine Navigation & Instruments | Sounder/Sonar Modules delivering the best traditional sonar

delivering the best traditional sonar views and lifelike images of fish-holding structure beneath and beside your boat

GNX™ Wind marine instrument and wireless remote controls

6-16mm(1/4" - 5/8") Rope Diameter

Micro-C Connectivity

Package: The Fuel Flow Sensor

Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Marine Navigation & Instruments | Sounder/Sonar Modules delivering the best traditional sonarSeries 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