The single -legged crane is composed of a powerful ring, butterfly buckle, lifting chain, and hook. Because there is only one load -bearing chain, it is called a single leg. The length of the chain is that the length of the hanging leg can be customized according to the needs of the use. In terms of specifications, single -legged cables can be selected. It can be selected. It can be 1 ton, 2 tons, 3 tons to 20 tons. The larger the tonnage is, the thicker the chain, the larger the strong ring, the hook, and the butterfly buckle.