40MM TRIPLE CARBO AIR BLOCK W/SWIVEL

Harken 40mm Triple Carbo Air Block with Swivel

The Harken 40mm Triple Carbo Air Block with Swivel is a lightweight, low-friction triple block built for smooth line control in compact multi-part rigging systems. With three 40mm sheaves, this block gives you extra mechanical advantage while keeping the overall setup clean, compact, and easy to manage.

The swivel head helps the block align naturally under load, reducing line twist and keeping your rigging running smoothly. It’s a solid choice for outrigger rigging, dredge pulley setups, teaser systems, control lines, and other custom marine applications where dependable line handling matters.

Key Features

• Triple 40mm sheave design
• Swivel head for cleaner line alignment
• Lightweight Carbo Air construction
• Smooth, low-friction performance
• Compact size with strong working load
• Works with line up to 3/8"
• Great for custom rigging, dredge setups, teaser systems, outrigger rigging, and marine tackle applications
• Manufacturer part number: 2640

Specs

• Sheave: 40mm / 1-9/16"
• Length: 94mm / 3-11/16"
• Weight: 4.6 oz / 118g
• Shackle Pin: 3/16" / 5mm
• Max Line Diameter: 3/8" / 10mm
• Max Working Load: 1,455 lb / 660kg
• Breaking Load: 3,050 lb / 1,383kg

The Harken 40mm Triple Carbo Air Block with Swivel is a strong, smooth-running option when you need compact triple-sheave performance for clean line management and custom boat rigging.