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75mm Carbo Ratchamatic Single Block


Model # 6840623 | Mfg # 2680
In stock online.
Control loaded lines with ease. 57mm Carbo Ratchamatic® Single Block is adjustable for use in many applications and weather conditions. This load-sensing ratchet block rolls freely in both directions under low loads, and then engages the ratchet automatically as loads increase. With 180-degree wrap, you get 10:1 holding power. Great for asymmetrical spinnakers when you need tough holding power and a quick release. Features Hardkote anodized eight-sided aluminum sheave, engineered plastic ball bearings in fitted ball races and long-glass reinforced engineered nylon cheek material.

75mm Carbo Ratchamatic Single Block

Becket No Becket
Diameter 7/16 Inch or 11 mm
Direction Any
Integral Cleat No Integral Cleat
Mount Type Swivel Shackle
Ratchet Ratcheting
Safe Working Load 750 Pounds
Sheave Diameter 75 mm
Type Single

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by PowerReviews
Harken75mm Carbo Ratchamatic Blocks

(based on 1 review)

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Reviewed by 1 customer

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(1 of 1 customers found this review helpful)


Do what they say.

By Nieldy

from Windermere England

About Me Professional

Verified Buyer


  • Attractive Design
  • Easy To Install
  • Easy To Use
  • Quality Construction


    Best Uses

    • Sailing

    Comments about 75mm Carbo Ratchamatic Blocks:

    We use these blocks to help get the genoa in on a 24ft racing yacht. The blocks work well and help to the extent that most of the time, winching in the sail is no longer needed. This means faster, crisp tacks. We have not yet decided upon the best setting at which the ratchet engages, but a few more races and we will find a good all round setting.

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