![Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Marine Navigation & Instruments | Sounder/Sonar Modules We've got you covered](https://cdn.shopify.com/s/files/1/0499/1942/6726/products/70615XL.jpg?v=1605267232)
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Performance & versatility
delivering the best traditional sonar views and lifelike images of fish-holding structure beneath and beside your boat
UPC: 723193821619
6-16mm(1/4" - 5/8") Rope Diameter
Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Marine Navigation & Instruments | Sounder/Sonar Modules We've got you coveredSeries 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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