Harken 2168 57mm Carbo Ratchamatic Block - Swivel - 2 x Grip

Harken 57mm Ratchamatic® Block — Swivel, 2x Grip is a high-performance, load-sensing ratchet block designed for maximum control in heavy-air sailing conditions. Featuring Harken’s Power3 system with 2x grip, this block delivers powerful holding capability while maintaining smooth, efficient trimming.

Under low loads, the block runs freely in both directions for minimal friction and easy handling. As load increases, the Ratchamatic® system automatically engages the ratchet, providing 20:1 holding power without the need for manual adjustment. This seamless transition ensures optimal performance across a wide range of conditions.

The swivel head allows the block to align perfectly under changing loads, while the lightweight Carbo construction offers excellent strength and durability without adding unnecessary weight. Ideal for mainsheets, jib sheets and control lines on dinghies, sportboats and small keelboats.

Specifications

Length: 103 mm / 4 1/16 in

Weight: 104 g / 3.7 oz

Sheave Diameter: 57 mm / 2 1/4 in

Maximum Line Diameter: 10 mm / 3/8 in

Maximum Working Load: 227 kg / 500 lb

Breaking Load: 907 kg / 2000 lb

Holding Power: 20:1

Shackle Pin Diameter: 5 mm / 3/16 in

Key Features

• Ratchamatic® load-sensing technology for automatic engagement
• Power3 system with 2x grip for maximum control in strong wind conditions
• Free-running under low loads, ratchet engages as load increases
• 20:1 holding power reduces load on the sailor in heavy air
• Swivel head for optimal alignment under changing loads
• Lightweight Carbo construction for strength and durability
• Low-friction performance for efficient trimming
• Ideal for mainsheets, jib sheets and control lines
• Suitable for dinghies, sportboats and small keelboats
• Reliable performance for racing and performance sailing