![Ronstan Series 50 All Purpose Block - Single Upright Lead [RF51171]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/600x600/products/21014/21714/70682XL__47099.1530003033.jpg?c=2 "Ronstan Series 50 All Purpose Block - Single Upright Lead [RF51171]")
![Ronstan Series 50 All Purpose Block - Single Upright Lead [RF51171]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/1280x1280/products/21014/21714/70682XL__47099.1530003033.jpg?c=2 "Ronstan Series 50 All Purpose Block - Single Upright Lead [RF51171]")
Product Overview
Series 50 All Purpose Block - Single Upright Lead
Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Ideal for high load applications. Wear resistant sheave material, in lightweight, self lubricating polymer, is suitable for use with rope or wire
Applications:
- Typically used for halyards at the mast base.
Materials:
- UV stabilized acetal sheave
- Grade 316 stainless steel load housing
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