The spreading arms, cylinders and other main parts are all adopt Aluminum alloy, it reduce the weight but improve safety ability, the material own the quality of the aviation industry, also has the features such as sigh temperature resistance, corrosion resistance, high hardness, long service life and so on. The spreading tips is forged alloy steel which had been quenched, hardness is very high and protect the arms very well, so Aolai Rescue is the represent of high quality.
The color is changed to blue, it is bright, so users can find the spreader very easily. Compared with the traditional spreader, besides of the serrated teeth, there are more shark teeth on the tips, so it can catch and tearing the opening very easily. The serrated teeth on the inside can help the spreader clamp any object.