The tons of aluminum alloy hand pulling the gourd uses the 2 -line chain. The length of the chain is 1.5 meters, the weight is about 8kg, and the weight is relatively light. The aluminum alloy shell is not rust, and the diameter of the chain is 5 mm. Light weight can reduce the pressure of workers' carrying and high -altitude operations to make the operations more laborious. The structure is better, and the hand is more powerful.