Hot Dipped Galvanized Try Net Block-LG RIGGING®, also known as try netblock.
Pulley and Block are common lifting mechanisms used for rigging.
The surface finish is Hot Dip Galvanized, so it could be anti-corrosive and used in Ocean Operations.
All of the Net Blocks are Hot Dip galvanized. Steel sheave with flame-hardened groove, for maximum wear under abrasive conditions.