There are many types of hand pour gourds. Hand -pour gourds are divided into different types based on tonnage, appearance, application scenarios. The specifications of gourds are generally divided into stage hand -stretched gourds, aluminum alloy bolt, stainless steel hand pour gourd, explosion -proof hand pour gourd, HSZ type hand stubbuku, etc. HSZ -type hand -stubbura is a manual lifting device that is more common and convenient to use on the market. HS represents the ring chain, and the ring chain handblast is also known as the inverted chain. Z represents the heavy load of the working level Z, which is suitable for heavy -level loads. Before use, check whether the chain chain ring is relaxing and free, and check if there is a condition of twisting or entanglement.