This item is currently out of stock.
Special order from Ronstan — Estimated 2–4 weeks.
Description
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
Accessories
No accessories listed for this product.
Specifications
| SKU | RF51171 |
| UPC | 9316800557448 |
| Brand | Ronstan |
| Category | Sailing |
| Country of Origin | — |
| Weight | 0.3 |
| Dimensions | 5 x 3 x 1 |
| Status | Active |
| Last Synced | 8/27/2026, 2:06:13 AM |
Compliance & Shipping
Product Literature
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Frequently Bought Together
Compare Key Features
| Feature |  Ronstan Series 50 All Purpose Block - Single Upright Lead CURRENT |  Ronstan Series 30 Ball Bearing Orbit Block™ - Cheek |  Ronstan Series 30 Ball Bearing Orbit Block - Triple - Becket |  Harken 40mm Carbo Block 90° Fixed Head |  Barton Marine Ratchet Block - 55mm |
|---|---|---|---|---|---|
| Price | $54.04 | $19.25 | $57.81 | $41.35 | $111.66 |
| Brand | Ronstan | Ronstan | Ronstan | Harken | Barton Marine |
| Condition | New | New | New | New | New |
| Availability | Out of Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 0.3 | 0.06 | 0.19 | 0.11 | 0.3 |
| Dimensions | 5 x 3 x 1 | 4 x 2 x 1 | 4 x 2 x 2 | 5 x 3 x 1 | 6 x 3 x 2 |
| SKU | RF51171 | RF35151 | RF35312 | 2659 | 90500 |
| Country | — | INDONESIA | INDONESIA | UNITED STATES | — |
| View Item | View Item | View Item | View Item | View Item |
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Price
$54.04