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Efficient braking system: double pawl brake system, splits the load to opposite sides of the ratchet gear. It makes the operation more stable and safety. Streamlined card slot design: high quality slot to protect the chain, perfect fit to the chain direction, smooth chain, no jamming and no chain damage. High-quality hardened gears: using one-piece forging process, anti-drop and more durable. N gear -- neutral gear, the chain can be pulled freely to adjust position of hook. UP--upward DOWN - -down







