This product is a nail machine that allows for quick and effortless nailing. Its quiet operation ensures no disturbance, making your renovation work more efficient. Feature: Accurate adjustment of the third gear strength, which can be adjusted according to different construction requirements. Industrial grade spring, after high-temperature heat treatments, makes the spring structure strong and has strong elasticity without deformation. Automatic slag discharge hole, which can automatically discharge most of the gunpowder residue and heat, long lifespan. External sponge soundproof cover, internally thickened steel, effectively reducing sound. Engineering handle, fits the handpalm for more comfort, comfortable grip, and long-lasting grip without fatigue.