Harken 75mm Fiddle Block — Swivel, Cam Cleat is a versatile, high-performance solution designed for efficient trimming and secure line control in demanding sailing systems. Featuring a fiddle configuration with dual sheaves, this block enables powerful and flexible purchase setups while maintaining smooth, low-friction operation.
Part of the trusted Carbo Air range, this block combines lightweight construction with excellent strength and durability. The large 75mm sheave efficiently handles thicker lines, reducing friction and improving performance under load, while the smaller sheave allows for compact multi-line systems. The swivel head ensures optimal alignment in dynamic conditions, and the integrated cam cleat provides quick adjustment and secure line holding without additional hardware.
Ideal for mainsheet systems, vangs and control lines on dinghies, keelboats and small yachts, this fiddle block offers a clean, efficient and reliable solution for both racing and cruising use.
Specifications
Length: 157 mm / 6 3/16 in
Weight: 424 g / 15 oz
Sheave Diameter: 75 mm / 2 15/16 in
Maximum Line Diameter: 12 mm / 1/2 in
Maximum Working Load: 408 kg / 900 lb
Breaking Load: 1020 kg / 2250 lb
Shackle Pin Diameter: 6 mm / 1/4 in
Key Features
- Fiddle block design with dual sheaves for versatile purchase systems
- Integrated cam cleat for quick, secure line holding
- Large 75mm sheave for efficient handling of thicker lines
- Low-friction Carbo Air construction for smooth, efficient performance
- Swivel head for optimal alignment under changing loads
- Lightweight yet strong construction for performance sailing
- Compact all-in-one design reduces the need for additional hardware
- High working load capacity for demanding control systems
- Ideal for mainsheets, vangs and trimming systems
- Suitable for dinghies, keelboats and small yachts
- Reliable performance for racing and cruising use





