Harken 57mm Flip Flop Block w/Lockoff

Sheave dia. (in) = 2.25
Sheave dia. (mm) = 57 
Width (in) = 2.25
Width (mm) = 57 
Length (in) = 4.375
Length (mm) = 111
Height (in) = 2.875
Height (mm) = 73 
Max. line dia. (in) = 3/8
Max. line dia. (mm) = 10 
Weight (oz) = 11.2 
Weight (g) = 317.8
Max. working load (lb) = 2500 
Max. working load (kg) = 1136 
Breaking load (lb) = 5000 
Breaking load (kg) = 2273 
Description = 2 1/4 in. Flip-flop Block with
A (in) = 3 11/16      
A (mm) = 93.6 
B (in) = 1.5625
B (mm) = 39.7