$56.22$66.14per unit
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Special order from Ronstan — Estimated 2–4 weeks.
Description
Series 50 All Purpose Cheek Block - Single
Features:
- Exceptionally high working loads
- Low maintenance, long service life
- Self-lubricating Acetal polymer sheave ensures low friction and extreme durability
All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.Can be mounted on masts and booms using the curved surface adapter. Can be stacked to create a double version, but no more than 60% of the rated working load should be applied to the upper sheave. Mount with 3mm x 6mm (1/4") fasteners (not supplied).
Applications:
- Mainsheet and halyard applications, vang and spinnaker control lines on boats to 10m (33ft)
- S60 - on boats up to 12m (40ft)
Materials:
- Alloy cheeks
Accessories
No accessories listed for this product.
Specifications
| SKU | RF51151 |
| UPC | 9316800246656 |
| Brand | Ronstan |
| Category | Sailing |
| Country of Origin | — |
| Weight | 0.2 |
| Dimensions | 5 x 3 x 1 |
| Status | Active |
| Last Synced | 10/10/2026, 2:06:15 AM |
Compliance & Shipping
Returnable
Product Literature
No literature or manuals available for this product.
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Frequently Bought Together
Compare Key Features
| Feature |  Ronstan Series 50 All Purpose Cheek Block - Single CURRENT |  Ronstan Series 30 Ball Bearing Orbit Block - Triple - Becket |  Harken 57mm Carbo Air Block w/Swivel |  Barton Marine Ratchet Block - 55mm |  Harken 40mm Carbo Block 90° Fixed Head |
|---|---|---|---|---|---|
| Price | $56.22 | $57.81 | $53.93 | $111.66 | $41.35 |
| Brand | Ronstan | Ronstan | Harken | Barton Marine | Harken |
| Condition | New | New | New | New | New |
| Availability | Out of Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 0.2 | 0.19 | 0.3 | 0.3 | 0.11 |
| Dimensions | 5 x 3 x 1 | 4 x 2 x 2 | 6 x 3 x 1 | 6 x 3 x 2 | 5 x 3 x 1 |
| SKU | RF51151 | RF35312 | 2600 | 90500 | 2659 |
| Country | — | INDONESIA | UNITED STATES | — | UNITED STATES |
| View Item | View Item | View Item | View Item | View Item |
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$56.22