Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171]
Questions before ordering?
Text our installation team for help confirming fitment, wiring, and compatibility before you buy.
Series 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 bearings
- UV stabilized Acetal sheave
- Grade 316 stainless steel load housing
Why Buy From Flyte Tech?
Flyte Tech is a family-owned marine electronics business based in Gulfport, FL, with hands-on experience installing the products we sell.
You may also like
Product questions
Have a question about a product?
Questions about fitment or compatibility? We install what we sell and can point you in the right direction.