The tonnage specifications of hand pour gourds are divided into different specifications from 0.5 tons to 50 tons. The standard chain length is 3 meters, and the specification of 10 -ton hand gourd is 10 mm G80 chain. The chain uses the 4 -line chain. After 1.25 times experimental loading lotus testes. The self -weight of 10 tons of pour gourd is about 75 kg. The chain increases, and the self -weight will increase. The upper and lower hooks of the hand -pour gourd are covered with insurance cards, which can prevent the hand of stubburies from being decoupled, and the heavy objects fall off. The 10 -ton hand pour gourd is divided into round hand pour gourds and triangular hand -shaped pour gourds. The length of the chain support customization.