Harken
Mastcollar block Sheave dia. (in): 2 1/4 Sheave dia. (mm): 57 Length (in): 3 11/16 Length (mm): 93.5 Weight (oz): 7 Weight (g): 198 Clevis pin dia. (in): 5/16 Clevis pin dia. (mm): 8 Max. line dia. (in): 5/8 Max. line dia. (mm): 16