Feature:1. Adjustable Strength: 5 speed adjustable force with strong penetration, labor saving and convenient to use.2. Thickened Wear resistant Noise Reduction Cover: silence and noise reduction, low noise during operation.3. Automatic Slag Discharge Hole: with high hardness, thickened and sturdy, which automatically eliminates gunpowder and heat, stable for safety performance.4. Ergonomic Handle: ergonomically designed anti slip handle for comfortable grip, effective oil and slip resistant.5. Not Easy to Get Stuck: this machine uses alloy needles, which are not easy to get stuck even after continuous nailing.6. Diversified Accessories: equipped with a variety of accessories, such as protective glassed, gloves, earplugs, hex key, spring, pin, nails, and more.7. Scope of Application: fixed anti theft windows, meter boxes, air conditioning racks, ventilation ducts, water ducts, etc8. Compatible 7.3 and 8.5mm Fastening NailerSpecification:Specifications:Adjustable Strength: 5 Gear Fastening Nailer Size: 7.3 and 8.5mmMaterial: Stainless SteelItem Size: 355 * 125 * 45mm / 13.98 * 4.92 * 1.77inItem Weight: 1026g / 2.26lbPackage Weight: 1768g / 3.89lbPackage Size: 40 * 27 * 6.5cm / 15.75 * 10.63 * 2.56in.Package List:1 * Nail Gun1 * Pair of Protective Glasses2 * Hex Wrench1 * Percussion Spring1 * Reset Spring1 * Mini Spring2 * Pin1 * Percussion Needle1 * Cleaning Brush1 * Storage Case1 * User Manual (English)