Harken 57mm Carbo Quad Swivel Block - Lightweight and High-Load Marine Hardware

57mm Carbo Quad Block - Swivel

Low-friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming.

Features:

• Sheave (mm) 57 mm
• Sheave (in) 2 1/4 in
• Maximum line (mm) 10 mm
• Maximum line (in) 3/8 in
• Maximum working load (kg) 1080 kg
• Maximum working load (lb) 2380 lb

The Harken 57mm Carbo Quad Swivel Block is an essential component for sailboat rigging, offering a combination of lightweight design and exceptional strength. Made from high-quality Carbo Air material, this low-friction block is engineered to deliver reliable performance under demanding conditions. Its compact size and high working load capacity make it an ideal choice for safe, efficient sail trimming and line management on both small and large vessels. Designed to be a dependable companion to Harken's larger boat blocks, this swivel block ensures smooth operation and durability in challenging marine environments.

The sheave measures 2 1/4 inches in diameter, accommodating line diameters up to 3/8 inch (10 mm). With a maximum working load of 2,380 pounds (1,080 kg), it provides robust support for high-tension applications. The swivel feature facilitates easy line adjustment and reduces wear on lines and fittings, enhancing overall system longevity. Its lightweight construction does not compromise strength, making it suitable for use where weight savings are critical, such as racing or performance cruising.

Built with Harken's renowned quality standards, this block combines innovative materials with precise engineering to ensure smooth operation and long-term reliability. Whether used in halyard setups, control lines, or sheet systems, the Harken 57mm Carbo Quad Swivel Block is a versatile and durable choice for sailors seeking performance and dependability. Its compact design allows for flexible installation options, providing effective line control without adding unnecessary weight to your rigging system.

Features:

• Sheave diameter: 2 1/4 inches (57 mm)

• Maximum line diameter: 3/8 inch (10 mm)

• Maximum working load: 2,380 pounds (1,080 kg)

• Lightweight Carbo Air construction for strength and low friction

• Swivel design for easy line adjustment and reduced wear

• Compact size suitable for various rigging configurations

• Reliable performance in demanding marine environments