Harken 2602 57mm Carbo Double Block - Swivel

Harken 57mm Double Block — Swivel is a high-performance, low-friction solution designed for efficient load handling in demanding sailing applications. Part of the trusted Carbo Air range, this double block offers exceptional strength, smooth operation and reliability in a compact, lightweight design.

Featuring two sheaves for increased mechanical advantage, this block is ideal for control lines and purchase systems where additional power is required. The swivel head ensures optimal alignment under load, reducing friction and improving overall system efficiency.

Built as a companion to Harken Big Boat blocks, the 57mm Carbo Air Double Block delivers impressive working loads while remaining lightweight and easy to handle. Perfect for sheets, vangs and trimming systems on dinghies, keelboats and small yachts.

Specifications

Length: 121 mm / 4 3/4 in

Weight: 178 g / 6.3 oz

Sheave Diameter: 57 mm / 2 1/4 in

Maximum Line Diameter: 10 mm / 3/8 in

Maximum Working Load: 720 kg / 1584 lb

Breaking Load: 1500 kg / 3300 lb

Shackle Pin Diameter: 6 mm / 1/4 in

Key Features

• Double sheave design for increased mechanical advantage
• Low-friction Carbo Air construction for smooth, efficient performance
• Lightweight yet strong for high-load applications
• Swivel head for optimal alignment under load
• High working load capacity for safe trimming
• Compact and durable design for demanding marine environments
• Ideal for control lines, vangs and purchase systems
• Suitable for dinghies, keelboats and small yachts
• Reliable performance for both racing and cruising