Harken 57mm Carbo Ratchet Block Video Review - Sailing Chandlery

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May 02, 2025 1 min read

The team at Sailing Chandlery review the Harken 57mm Carbo Ratchet Block - 2135.

This ratchet block is one of the most popular on the market today and comes as standard on many new boats, including our Devoti ILCAs to SB20s.

Specifications

  • Sheave Ø - 57mm
  • Maximum line Ø - 10mm
  • Maximum working load - 227kg
  • Length - 103mm
  • Weight 85g
  • Shackle Pin Ø - 5mm
  • Breaking load - 907kg
  • Holding power - 10:1

Harken 57mm carbo ratchet block 2135


57mm Harken Carbo Ratchet blocks allow you to hold your ropes in your hand and offer balance between holding power and controlled easing.

This 57mm Harken ratchet block has an on/off switch so the ratchet can quickly be turned off when not needed. It also swivels so the block goes in the direction the rope is coming from.



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