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![Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Brand_Poly-Planar Frequency & Channels: Fixed frequency](https://cdn.shopify.com/s/files/1/0513/2618/9750/products/70615XL.jpg?v=1607263466)
Frequency & Channels: Fixed frequency 50kHz and 200kHz channels
weatherproof construction and amazing sound quality
Twist lock system-plug locks securely into socket
Box Dimensions: 1"H x 5"W x 11"L WT: 0
bilge pumps
Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Brand_Poly-Planar Frequency & Channels: Fixed frequencySeries 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
