Harken 57mm Carbo Quad Block – Swivel, 10mm Line, 1080kg MWL

Optimize your sailing performance with the Harken 57mm Carbo Quad Block. Engineered for lightweight strength and exceptional reliability, this block ensures efficient and smooth trimming for demanding marine applications. Part of the renowned Harken Carbo Air block series, it's designed to be a dependable companion to Harken's Big Boat blocks, offering very high working loads in a compact form. Upgrade your rigging for peak performance and durability.

• Sheave Diameter: 57 mm (2 1/4 in): Ideal for a wide range of rigging systems, offering versatile compatibility.
• Maximum Line Diameter: 10 mm (3/8 in): Accommodates common small-diameter lines, perfect for racing and performance applications.
• Maximum Working Load: 1080 kg (2380 lb): Provides exceptional strength for demanding loads, ensuring reliable and safe trimming.
• Breaking Strength: 2270 kg (5000 lb): Offers a substantial safety margin for extreme conditions.
• Lightweight Construction: Weighs only 340 g (0.75 lb/12 oz): Carbo composite construction reduces overall boat weight without sacrificing strength.
• Low-Friction Carbo Air Design: Ensures smooth operation and reduces line wear, enhancing trimming efficiency.
• Swivel Head: Allows versatile attachment and prevents line twisting, optimizing block alignment.
• UV-Stabilized Composite Frame: Provides excellent protection against long-term exposure to saltwater and sun, ensuring durability and longevity.

This quad block is ideal for critical control systems such as main and jib sheets on centerboard and keelboats like Etchells, Dragons, and J/24s, mainsheet systems on catamarans, as well as vangs, cunninghams, and outhauls. It can also be paired with the Harken 2632 base block for an 8:1 Carbo low-profile mainsheet system.