•Material of Hook:Forged super alloy steel with 3:1 safety factor •Material of pulley: Cast steel •Material of wheel core: Pure bronze •Quantity of pulley: Single •Connecting type: Hook type
•Material of Shackle:Forged super alloy steel with 3:1 safety factor •Material of pulley: Cast steel •Material of wheel core: Pure bronze •Quantity of pulley: Single •Connecting type: Link type
•Material of tail board:Forged super alloy steel with 3:1 safety factor •Material of pulley: Cast steel •Material of wheel core: Pure bronze •Quantity of pulley: Single •Connecting type: Link type
•Material of Hook:Forged super alloy steel with 3:1 safety factor •Material of pulley: Cast steel •Material of wheel core: Pure bronze •Quantity of pulley: Double •Connecting type: Hook type
•Material of Shackle:Forged super alloy steel with 3:1 safety factor •Material of pulley: Cast steel •Material of wheel core: Pure bronze •Quantity of pulley: Double •Connecting type: Link type