1. & Double Silencer: This strong power portable hand power nail gun is made of solid metal, with a non-slip rubber handle and non-slip hood, low noise, and Undestroyable. The thickened steel dispeller will reduce noise, r, and more comfortable building environments without disturbing family or neighbors 2.Widely Applications: This woodworking and decoration integrated nail shooter ,hand power portable nail gun is suitable for concrete walls, camera installation, electric box installation, water and power installation, air conditioning installation and hanging picture frame, pipeline installation, wire binding, etc 3.Strong Penetration:The woodworking and decoration integrated air nailer with strong penetration force, Concrete nailer only takes 0.1s to pierce a 3mm steel plate in one step. 5 gears adjustable power, different gear the power effect is obviously different. It can be adjusted according to different construction intensity requirements 4.Easy Operation: This lightweight concrete nail gun is powered by hand. Easy to use, just five simple steps: 1. Wear protective glasses, gloves, and earplugs; 2. Choose the nail; 3. Nail gun vertically at the workplace ready to shoot; 4. Vertical force into the wall; 5. Hold the muffler cover, and compress it many times. If occurs can't work, please delete the residue before trying a few more nails