Harken 40mm Ratchamatic Block

Including VAT

This new 40mm Ratchamatic block from Harken features the familiar T2 line styling and soft-attachment system, as well as a ratchet adjustment system on the lashing that allows for a variety of options for securing the block at exactly the right height and to maintain a fair lead.
Designed with composite fiber-reinforced sideplates and a hardcoat-anodized aluminum sheave, the Ratchamatic maintains the necessary high-strength, yet weighs only a few ounces; thanks in part to a minimum of moving parts in the ratcheting mechanism.

  • Sheave Ø (mm) 40 mm
  • Length (mm) 57 mm
  • Weight (g) 25 g
  • Maximum line Ø (mm) 10 mm
  • Maximum working load (kg) 136 kg
  • Breaking load (kg) 454 kg
  • Holding power 10:1


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T2 Ratchamatic blocks are clearly labeled with high-contrast directional markers for correct reeving and trimming direction.
Pressure on the line engages the ratchet mechanism, which switches seamlessly from free-running to ratchet mode.
Use for mainsheet and spinnaker systems on beachcats, dinghies, and sportboats.
A length of Spectra® line with a polyester cover is included.

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