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57mm Carbo Ratchamatic Double Block


Model # 10616449 | Mfg # 2634
Ships directly from the vendor
Control loaded lines with ease. 57mm Carbo Ratchamatic® Double 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.

57mm Carbo Ratchamatic Double Block

Becket No Becket
Diameter 3/8 Inch or 10 mm
Direction Any
Integral Cleat No Integral Cleat
Mount Type Swivel Shackle
Ratchet Non Ratcheting
Safe Working Load 750 Pounds
Sheave Diameter 57 mm
Type Double

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by PowerReviews
Harken57mm Carbo Ratchamatic Blocks

(based on 1 review)

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Reviewed by 1 customer

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Sheeting in used to be hard

By Coppertop

from Lake Arrowhead, CA

Verified Buyer

Comments about 57mm Carbo Ratchamatic Blocks:

I am a 46 female novice racing an MC Scow. This block has made sheeting in and holding my main so much easier! My arms used to ache after racing. Now I am able to now get my blocks to meet without straining. I only wish that the swivel lock would stay locked. I currently have it aft, with the mainsheet directed down to a lower block. Perhaps if I rotated the swivel, the main wouldn't contact it as much and inadvertently unlock it. None the less, I still wouldn't change it out...I love this ratchamatic!

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