Harken Swivel Carbo Block - 40mm

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Price: $39.90


Carbo AirBlocks® are 60% stronger and 30% lighter than Harken's Classic blocks. 

The nylon-resin sideplates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Sheaves spin on high-load ball bearings with fitted races for low-friction operation. Ball bearings, sheave, and sideplates are UV-stabilized with carbon black for maximum protection.

Use 40 mm Carbo for jib and mainsheet systems on high-performance dinghies and for loaded control lines on small keelboats.

Use for:
Main/jib sheets
Mainsheet fine-tune
Control lines


  • Max Line Diameter: 3/8"
  • Sheave: 1-9/16"
  • Safe Working Load: 485lb
  • length: 3-3/8"
  • Weight:1.6oz
  • Shackle pin 4mm
  • Breaking Strength: 1620lb