1. Shearing blade adopts high-quality heat-treated tool steel, with surface anodized, good in wearing resistance；2. Protective cover for main parts to prevent splash during shearing,；3.Bi-directional self-lock function and automatic reset reversing valve make operation convenient and safe； 4. Ergonomically designed, can automatically push material to the biggest shearing strength of blade center；5. Less opening and closing time guarantee a faster rescue.