![Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Lighting | Bulbs The Single Stack Water System](https://cdn.shopify.com/s/files/1/0350/0497/3196/files/70615XL.jpg?v=1682715726)
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The Single Stack Water System is a fully assembled water pressure set which makes installation of water pressure systems simple
It's a value that can't be beat - a quality
Rubber football needle valve for easy inflation and long life
Replacement Portlight Lens Only - 5" x 12" - Smoke
Household style
Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Lighting | Bulbs The Single Stack Water SystemSeries 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