29MM SINGLE CARBO AIR BLOCK W/SWIVEL

Harken 29mm Carbo Air Block with Swivel

The Harken 29mm Carbo Air Block with Swivel is a compact, lightweight pulley built for smooth line handling in tight, high-load setups. Originally designed for small-boat sailing control systems, this block has become a solid option for custom rigging applications where low friction, strength, and compact size matter.

Its swivel head helps keep line angle clean and reduces twisting, while the lightweight Carbo construction keeps unnecessary bulk out of the system. Great for use with smaller diameter line, dredge pulley setups, outrigger rigging, teaser systems, and other custom marine applications.

Key Features

• 29mm sheave diameter
• Swivel head for cleaner line alignment
• Lightweight Carbo Air construction
• Low-friction design for smooth operation
• Compact size for tight rigging setups
• Works with line up to 5/16"
• Maximum working load: 330 lb
• Breaking load: 1,000 lb
• Manufacturer part number: 340

Specs

• Sheave: 29mm / 1-1/8"
• Length: 66mm / 2-5/8"
• Weight: 0.9 oz / 26g
• Shackle Pin: 5/32" / 4mm
• Max Line Diameter: 5/16" / 8mm
• Max Working Load: 330 lb
• Breaking Load: 1,000 lb

Harken’s 29mm Carbo Air Block is a dependable choice when you need a small, strong, low-friction block for clean line management on the boat.