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Description
Series 50 All Purpose Block - Double
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. Swivel shackle head for full 360 degree rotation (non-locking).
Features:
- Exceptionally high working loads
- Low maintenance & long service life
- Self-lubricating Acetal polymer sheave ensures low friction and extreme durability
- Slotted pin shackle eliminates fouled lines
Applications:
- Mainsheet and halyard applications, vang and spinnaker control lines on boats to (33ft). 10m
- S60 - on boats up to 40ft, (12m)
Materials:
- Grade 316 stainless steel load strap
- Impact and UV resistant, fiber reinforced Nylon cheeks
Specifications:
- Sheave Diameter: (inch) 2" / (mm) 50
- Max Rope Diameter: (inch) 1/2" / (mm) 12
- Pin Diameter: (inch) 1/4" / (mm) 6
- Maximum Working Load: (lb) 2200 / (kg) 1000
- Breaking Load: (lb) 4410 / (kg) 2000
- Weight: (oz) 9.0 / (g) 255
Accessories
No accessories listed for this product.
Specifications
| SKU | RF51200 |
| UPC | 9316800241231 |
| Brand | Ronstan |
| Category | Sailing |
| Country of Origin | — |
| Weight | 0.57 |
| Dimensions | 5 x 3 x 2 |
| Status | Active |
| Last Synced | 10/5/2026, 2:05:08 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 Block - Double CURRENT |  Ronstan Series 30 Ball Bearing Orbit Block - Triple - Becket |  Barton Marine Ratchet Block - 55mm |  Harken 16mm Block |  Harken 40mm Carbo Block 90° Fixed Head |
|---|---|---|---|---|---|
| Price | $78.62 | $57.81 | $111.66 | $17.21 | $41.35 |
| Brand | Ronstan | Ronstan | Barton Marine | Harken | Harken |
| Condition | New | New | New | New | New |
| Availability | In Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 0.57 | 0.19 | 0.3 | 0.1 | 0.11 |
| Dimensions | 5 x 3 x 2 | 4 x 2 x 2 | 6 x 3 x 2 | 3 x 2 x 1 | 5 x 3 x 1 |
| SKU | RF51200 | RF35312 | 90500 | 404 | 2659 |
| Country | — | INDONESIA | — | UNITED STATES | UNITED STATES |
| View Item | View Item | View Item | View Item | View Item |
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Price
$78.62