Harken 2664 75mm Carbo Triple Block - Swivel

Harken 75mm Triple Block — Swivel is a high-load, high-efficiency solution designed for powerful purchase systems in demanding sailing applications. Part of the trusted Carbo Air range, this block delivers exceptional strength, smooth operation and reliability in a compact, performance-focused design.

The triple sheave configuration provides maximum mechanical advantage, making it ideal for high-load control systems such as mainsheets, vangs and cascading setups. The large 75mm sheaves handle thicker lines efficiently, reducing friction and improving trimming performance under load, while the swivel head ensures optimal alignment in dynamic conditions.

Built as a companion to Harken Big Boat blocks, this Carbo Air Triple Block offers outstanding working loads, making it suitable for dinghies, keelboats and small yachts where strength and efficiency are critical.

Specifications

Length: 152 mm / 6 in

Weight: 580 g / 20.5 oz

Sheave Diameter: 75 mm / 2 15/16 in

Maximum Line Diameter: 14 mm / 9/16 in

Maximum Working Load: 1650 kg / 3639 lb

Breaking Load: 4535 kg / 10000 lb

Shackle Pin Diameter: 8 mm / 5/16 in

Key Features

• Triple sheave design for maximum mechanical advantage
• Large 75mm sheaves for efficient handling of thicker lines
• Low-friction Carbo Air construction for smooth, efficient performance
• Swivel head for optimal alignment under changing loads
• High working load capacity for demanding sailing systems
• Lightweight yet strong construction for performance applications
• Compact, durable design for marine environments
• Ideal for mainsheets, vangs and high-load control systems
• Suitable for dinghies, keelboats and small yachts
• Reliable performance for racing and cruising use