Ronstan 20mm Orbit Ball Bearing Block Lashing Head - Double

The Ronstan Series 20 S20 BB Orbit Block, Double Becket Lashing is a compact, high-strength double block designed for efficient load distribution and smooth line handling in performance sailing applications. Featuring a double sheave configuration with integrated becket and lashing attachment, this block is ideal for complex control systems where precision and reliability are essential.

Engineered for low friction and maximum durability, the 20mm ball bearing sheaves run smoothly under load, while the lightweight construction keeps overall system weight to a minimum. Built with a high compression strength black Acetal sheave and toughened nylon cheeks, this Ronstan Orbit block delivers long-lasting performance in demanding marine environments.

Product Name: Series 20 Orbit Block™, Double Lashing
Brand: Ronstan
Unit: Each
Sheave Size: 20mm
Max Rope Size: 6mm
Maximum Working Load: 300kg
Breaking Load: 800kg
Material: Sheave: High compression strength black Acetal
Frame/Cheeks: Toughened Nylon
Warranty: 3 Years

• Ronstan Series 20 double block with becket and lashing attachment
• Dual 20mm ball bearing sheaves for smooth, low-friction performance
• Designed for rope up to 6mm diameter
• Lightweight and compact for performance sailing setups
• High compression strength Acetal sheaves for durability
• Toughened nylon frame and cheeks for strength in harsh conditions
• Maximum working load of 300kg
• Breaking load of 800kg
• Ideal for control lines and multi-line systems