Strong load: The block can easily lift heavy objects from up to 2000 kg, and the maximum elevation height is 3 m standard. Quality and durability: G80 manganese steel chain, strong load capacity, difficult to break, solid and lasting. Double layer housing has good blow resistance and strong wear resistance, effectively protects the internal structure and stable operation. Efficient use: external gear and high quality hook revolve 360 ​​° without any blocking space: The hook bolt can easily insert heavy objects into the latch: the smooth card slot adapts in the direction of the chain and the chain is not easy to hook, which makes it more fluid and cheaper to use.