Harken 40mm Fixed Carbo Block

Item #


Product Description

Harken 40mm Fixed Carbo Block

Carbo AirBlocks are 60% stronger and 30% lighter than the classic Harken block. Use the 40mm Carbo for the jib and mainsheet systems on high performance dinghies and for loaded control lines on small keelboats. 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 UV stabilized with black additive for maximum protection.


  • Sheave dia. - 1 9/16in (40mm)

  • Length - 2 1/2in (64mm)

  • Weight w/shackle - 1.4oz (40g)

  • Max. line dia. - 3/8in (10mm)

  • SWL - 485lb (220kg)

  • Breaking strength - 1620lb (735kg)