![Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Marine Navigation & Instruments | Sounder/Sonar Modules GNX™ Wind marine instrument and](https://cdn.shopify.com/s/files/1/0499/1942/6726/products/70615XL.jpg?v=1605267232)
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GNX™ Wind marine instrument and wireless remote controls
Micro-C Connectivity
delivering the best traditional sonar views and lifelike images of fish-holding structure beneath and beside your boat
Optional High Speed Transom Mount Transducer
Charging Your Batteries With Every Voltage
Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Marine Navigation & Instruments | Sounder/Sonar Modules GNX™ Wind marine instrument andSeries 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
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