57MM CARBO AIR BLOCK W/SWIVEL & CAM CLEAT

Harken 57mm Carbo Air Block with Swivel & Cam Cleat

The Harken 57mm Carbo Air Block with Swivel & Cam Cleat is a larger, smooth-running block built for clean line control with quick adjustment and secure holding power. The 57mm sheave gives you better line handling for larger rigging setups, while the integrated Cam-Matic® cleat lets you trim, adjust, and lock off line without adding extra hardware.

The swivel head helps the block align naturally under load, reducing twist and keeping your rigging running clean. This is a solid option for control lines, teaser adjustments, outrigger rigging, cockpit rigging, and custom marine applications where smooth movement and fast line control matter.

Key Features

• Single 57mm sheave design
• Swivel head for cleaner line alignment
• Integrated Cam-Matic® cam cleat
• Quick line adjustment and secure holding power
• Lightweight Carbo Air construction
• Smooth, low-friction performance
• Works with line up to 3/8"
• Great for control lines, teaser adjustments, outrigger rigging, and custom marine applications
• Manufacturer part number: 2615

Specs

• Sheave: 57mm / 2-1/4"
• Length: 110mm / 4-5/16"
• Weight: 9.5 oz
• Shackle Pin: 3/16" / 5mm
• Max Line Diameter: 3/8" / 10mm
• Max Working Load: 300 lb / 136kg
• Breaking Load: 750 lb / 340kg

The Harken 57mm Carbo Air Block with Swivel & Cam Cleat is a clean all-in-one rigging solution when you need smooth line movement, quick adjustment, and dependable holding power in one compact block.