Harken 57mm Carbo Double Ratchamatic Block

The Carbo Ratchamatic® is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless.

Description = Double
Sheave dia. (in) = 2.25
Sheave dia. (mm) = 57 
Length (in) = 4.5625
Length (mm) = 116
Weight (oz) = 7.2
Weight (g) = 204
Max. line dia. (in) = 3/8
Max. line dia. (mm) = 10 
Shackle pin dia. (in) = 1/4
Shackle pin dia. (mm) = 6  
Max. working load (lb) = 750
Max. working load (kg) = 340
Breaking load (lb) = 1875 
Breaking load (kg) = 851
Holding power w/180 degree wrap 50 lb (23 kg) = 10:1 

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