We also known as Wooden Block Single Sheave. This Kind of Block used in Marine Fishery. The surface is Hot Dip Galvanized, could be corrosion resistant.
The size are 100mm,120mm,140mm, 180mm and materials we use wood and super carbon steel.
The craft are Machining/Stamping/Forging/Hot Dipped Galvanized.
We are looking forward to receiving your enquiry!