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Harken 75mm Single Swivel Carbo Ratchet Block

Item #


Product Description

Harken 75mm Single Swivel Carbo Ratchet Block

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Nylon resin sideplates are densely packed with long glass fibers for a compact block with a high strength-to-weight ratio. Machined aluminum sheaves are Hardkote anodized for strength and corrosion resistance. Eight facets hold line securely. Free-rolling ball bearings, sheave and sideplates UV stabilized with black additive for maximum protection. The 75mm switchable ratchet provide precise on/off control with accessible, easy-to-operate on/off switches on both sides of the block. The 75mm provides up to 15:1 holding power.

Best for main/jib/spinnaker sheets, mainsheet fine-tune, traveler controls, genoa lead, foreguy.


  • Sheave dia. - 2 15/16in (75mm)

  • Length - 5 3/8in (137mm)

  • Weight w/shackle - 8oz (227g)

  • Max. line dia. - 7/16in (12mm)

  • Shackle pin dia. - 1/4" (6 mm)

  • SWL - 750lb (341kg)

  • Breaking strength - 3000lb (1361kg)