Overview
Manage dinghy control lines with the Ronstan Series 20 triple ball bearing block. Its low-friction sheaves suit vangs, Cunninghams and traveller controls, while the two-axis shackle head lets you choose between two fixed orientations.
Key features
- Ball bearing sheaves reduce friction as control lines move through the block.
- The head fixes at either 0° or 90° to suit the line arrangement.
- A 62g weight keeps added hardware weight low.
- UV-stabilized sheaves and impact- and UV-resistant cheeks suit outdoor exposure.
Specifications
- Series: 20
- Configuration: Triple block with two-axis shackle head
- Sheave diameter: 20mm (3/4 inch)
- Maximum rope diameter: 6mm (1/4 inch)
- Pin diameter: 4mm (5/32 inch)
- Maximum working load: 400kg (880lb)
- Breaking load: 850kg (1,870lb)
- Weight: 62g (2.2oz)
- Ball bearing material: Stainless steel
- Sheave material: UV-stabilized acetal
- Load strap and head fitting material: Grade 316 stainless steel
- Cheek material: Impact- and UV-resistant, fiber-reinforced nylon
Specifications
| Brand | Ronstan |
|---|---|
| Manufacturer part # | RF20302 |
| UPC | 9316800255573 |
| Boxed dimensions | 3 x 2 x 1 in |
| Shipping weight | 0.1 lb |
| Country of origin | INDONESIA |
Shipping & returns
Free standard shipping
Standard shipping is free on every U.S. order — no minimum. Need it faster? Faster delivery options are available at checkout for qualifying orders. In-stock orders ship quickly with tracking; oversized and freight items may ship separately and can take a little longer. International rates are calculated at checkout.
30-day returns
Request a return within 30 days of delivery. Authorized returns are subject to a 15% restocking fee. Return shipping is paid by the buyer; items must be new and in original packaging. See our refund policy.
Genuine products
We source from authorized U.S. distributors. Every product is new, genuine and covered by the manufacturer warranty.
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