Features: Adjust up&down switch to corresponding position and rotate hand wheel to the right till chain is in tension, then start to work. When the up&down switch is in the middle, the chain can be pulled freely to adjust position of hook. Alloy steel forging hook will not break but deform slowly when it is overloaded, which ensures safety. Lifting chain is made from G80 galvanized manganese steel with high intensity, high toughness and long service life. Chain drop-proof ring would prevent the chain from being pulled out when pulling chain freely to adjust position of hook. The cover on handle provides a comfortable grip feeling and prevent your hand from injury. Specifications: Chain Length: 3 meters / 9.84ftLifting Weight: 750kg Lifting Height: 3 meters / 9.84ft Item Weight: 8kg Package Includes: 1 x Chain Block