# Ronstan Series 20 Ball Bearing Orbit Block - Single - Dyneema Lashing - Becket Option [RF25109]

**Series 20 Ball Bearing Orbit Block - Single - Dyneema Lashing - Becket Option**  
  
The incredible Series 20 Orbit Block™ is capable of loads up to 250kg (550lb) while weighing a mere 9 grams. It's so light that it needs to be lashed down!  
  
**Features:**  

-   Integrated stainless steel hub to accept lashing attachment and through-sheave becket  
    
-   Suits up to 4mm(5/32") lashing  
    
-   Includes 750mm (30") x 1.7mm(1/16") diam lashing

  
  
**Applications:**  

-   Control lines on dinghies and catamarans to 5M(16')

  
  
**Materials:**  

-   Sheave: High compression strength carbon acetal  
    
-   Ball bearings: stainless steel  
    
-   Frame/Cheeks: Nylon

  
[Brochure (pdf)](https://productimageserver.com/literature/brochure/55155BR.pdf)

## Details

- **Price:** 15.43 USD
- **Type:** Outrigger Accessories
- **Tags:** 1st Class Eligible, Brand_Ronstan, Hunting & Fishing, Hunting & Fishing | Outrigger Accessories, MAP

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 15.43 USD | In stock |

## Images

- Ronstan Series 20 Ball Bearing Orbit Block - Single - Dyneema Lashing - Becket Option [RF25109] Ronstan

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> Source: [Besafe1st](https://besafe1st.com/products/ronstan-series-20-ball-bearing-orbit-block-single-dyneema-lashing-becket-option-rf25109)
> Updated: 2026-06-03