The gourd is distinguished according to the tonnage, such as 0.75 tons and 1.5 tons. 4 tons of hand -made gourds are made of aluminum alloy materials, which are strong and durable. It is suitable for places where frequent outdoor operations need to be trapped horizontally, and they are light and portable. In addition, the 4 -ton hand -pulling gourd is a lifting mechanical product with three functions with lifting, traction, and tightness. The whole machine has a reasonable design and simple operation. Its chain standard length is 1.5 meters, and there are other chain lengths that can be selected according to usage.