Harken 40mm Carbo Quad Block

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.

Max. working load (lb) = 1455 
Max. working load (kg) = 660
Shackle pin dia. (in) = 3/16 
Shackle pin dia. (mm) = 5  
Weight w/shackle (oz) = 6  
Weight w/shackle (g) = 170
Max. line dia. (in) = 3/8
Max. line dia. (mm) = 10 
Description = Quad/swivel  
Sheave dia. (in) = 1.5625
Sheave dia. (mm) = 40 
Length (in) = 3 11/16      
Length (mm) = 94 
Breaking load (lb) = 3050 
Breaking load (kg) = 1383 

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