Carbo AirBlocks® are 60% stronger and 30% lighter than our classic blocks.
The nylon resin sideplates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Ball bearings, sheave and sideplates UV stabilized with black additive for maximum protection.
Blocks feature Cam-Lock or U-Lock locking systems to lock the shackle in front or side positions, or swivel to keep line from twisting.
The high-load 57 mm Carbo has a broad working range. Use for main and jib sheets on centerboard and keelboats like Lightnings, Dragons, Solings, J/24s and for mainsheet systems on catamarans.
Use for: - Main/jib sheets - Mainsheet fine-tune - Control lines - Vangs - Cunninghams - Outhauls
Dimensions: Sheave diameter: 2-1/4 in (57 mm) Length: 4-3/4 in Weight w/shackle: 12 oz Max. line diameter: 7/16 in Shackle pin diameter: 1/4 in Safe Working Load: 2380 lbs Breaking strength: 5000 lbs
While we carry a ton of Harken hardware, some items are special order only. Call or email for details.