Features: Strong Penetration: The concrete nail gun with strong penetration force, Concrete nailer only takes 0.1s to pierce a 3mm steel plate in one step. High-Quality & Double Silencer: This strong power portable hand power nail gun is made of solid metal, with a non-slip rubber handle, low noise, safe and durable. The thickened steel dispeller will reduce noise, safer, and more comfortable building environments without disturbing family or neighbors. 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. Widely Applications: This 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. Package Includes: Equipped with a variety of accessories, such as protective glassed, gloves, earplugs, spring, pin, nails, and more. Specifications: Material: ABS +Metal Item Size: 300 * 120 * 40mm / 11.81 * 4.72 * 1.57in Item Weight: 552g / 1.21lb Package Weight: 1739g / 3.83lb Package Size: 39 * 27 * 6.5cm / 15.35 * 10.63 * 2.56in Package List: 1 * Nail Gun 1 * Pair of Earplugs 1 * Pair of Protective Glasses 1 * Pair of Gloves 1 * Percussion Spring 1 * Reset Spring 1 * Mini Spring 1 * Pin 1 * Percussion Needle 1 * Cleaning Brush 2 * Converter 100 * Round Nails 1 * Storage Case 1 * User Manual (English)