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Special order from Ronstan — Estimated 2–4 weeks.
Description
Series 20 Ball Bearing Block - Swivel Hook Head
Features:
Applications:
Materials:
Specifications:
Sheave Ø: 20mm(3/4")
Max. Rope Ø: 6mm(1/4")
M.W.L.: 135kg(300lbs)
B. L.: 270kg(590lbs)
Weight: 21g(0.7oz)
Features:
- Low friction
- High static and dynamic load capacity
- Lightweight
- Low profile swivelling hook for quick and easy attachment
- Hook suits rope, stainless steel and webbing fixing points
- Precision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction
Applications:
- Dinghy control lines
- Dinghy vangs
- Cunninghams
- Traveller controls
Materials:
- Stainless steel ball bearings
- UV Stabilized Acetal sheave
- Grade 316 stainless steel load strap and head fitting
- Impact and UV resistant, fiber reinforced Nylon cheeks
Specifications:
Sheave Ø: 20mm(3/4")
Max. Rope Ø: 6mm(1/4")
M.W.L.: 135kg(300lbs)
B. L.: 270kg(590lbs)
Weight: 21g(0.7oz)
Accessories
No accessories listed for this product.
Specifications
| SKU | RF20180 |
| UPC | 9316800416622 |
| Brand | Ronstan |
| Category | Sailing |
| Country of Origin | ID |
| Weight | 0.05 |
| Dimensions | 4 x 2 x 1 |
| Status | Active |
| Last Synced | 10/6/2026, 2:05:11 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 20 Ball Bearing Block - Swivel Hook Head 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 | $26.49 | $57.81 | $111.66 | $17.21 | $41.35 |
| Brand | Ronstan | Ronstan | Barton Marine | Harken | Harken |
| Condition | New | New | New | New | New |
| Availability | Out of Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 0.05 | 0.19 | 0.3 | 0.1 | 0.11 |
| Dimensions | 4 x 2 x 1 | 4 x 2 x 2 | 6 x 3 x 2 | 3 x 2 x 1 | 5 x 3 x 1 |
| SKU | RF20180 | RF35312 | 90500 | 404 | 2659 |
| Country | ID | INDONESIA | — | UNITED STATES | UNITED STATES |
| View Item | View Item | View Item | View Item | View Item |
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Frequently Asked Questions
Price
$26.49