Block 57mm SS ESP Swivel w/Becket Sheave dia. (in): 2 1/2 Sheave dia. (mm): 57 Length (in): 6 11/16 Length (mm): 170 Weight (oz): 12.5 Weight (g): 354 Clevis pin dia. (in): 5/16 Clevis pin dia. (mm): 8 Max. line dia. (in): 5/8 Max.
Harken
Block 57mm SS ESP Swivel w/Becket Sheave dia. (in): 2 1/2 Sheave dia. (mm): 57 Length (in): 6 11/16 Length (mm): 170 Weight (oz): 12.5 Weight (g): 354 Clevis pin dia. (in): 5/16 Clevis pin dia. (mm): 8 Max. line dia. (in): 5/8 Max.