57MM SINGLE CARBO AIR BLOCK W/SWIVEL

Harken 57mm Carbo Air Block with Swivel

The Harken 57mm Carbo Air Block with Swivel is a lightweight, low-friction pulley built for smooth line handling in higher-load rigging setups. With a larger 57mm sheave and stronger load rating than the smaller Carbo blocks, this block is a solid choice for outrigger rigging, dredge pulley setups, teaser systems, control lines, and other custom marine applications where clean line movement matters.

The swivel head helps the block align naturally under load, reducing line twist and keeping your rigging running smoothly. Harken’s Carbo Air construction keeps the block light without sacrificing strength, making it a dependable option for boat rigging where performance and durability are both important.

Key Features

• Single 57mm sheave design
• Swivel head for cleaner line alignment
• Lightweight Carbo Air construction
• Low-friction ball bearing performance
• Strong working load for larger rigging applications
• Works with line up to 3/8"
• Great for custom rigging, dredge setups, teaser systems, and marine tackle applications
• Manufacturer part number: 2600

Specs

• Sheave: 57mm / 2-1/4"
• Length: 110mm / 4-5/16"
• Weight: 3.1 oz / 87g
• Shackle Pin: 3/16" / 5mm
• Max Line Diameter: 3/8" / 10mm
• Max Working Load: 792 lb / 359kg
• Breaking Load: 2,380 lb / 1,079kg

The Harken 57mm Carbo Air Block is a strong, smooth-running option when you need a larger single-sheave block for clean line management and custom marine rigging.