Feature: 1. COMFORTABLE MATERIAL: The nail gun is made of solid high speed steel and aluminum alloy with non slip rubber handles and non slip guards. Ergonomic design, comfortable grip, suitable for long working hours, save time and effort 2. SMALL AND LIGHTWEIGHT: Manual steel nail gun tool support 4 speed adjustment, light weight nail gun, suitable for nail length range 32‑57mm, small size. Easy and labor saving, girls can also use easily 3. LOW NOISE: The concrete nail gun work with low noise, does not produce a lot of dust, energy saving and environmental protection. With extension rod, each length for 40cm, nail pipe diameter is 8.5cm 4. WIDELY USED: Manual steel nail gun tool is suitable for red brick wall, concrete wall, 3mm aluminum alloy wire slot and thick wood and other materials, widely used in air conditioning installation, prevent theft window installation, ceiling ceiling, wire pipe fixing, fire pipe installation, exhaust pipe installation and other scenarios 5. LOW NOISE: Sound reduction level of concrete nail gun is 40dB, safe and durable, create a safer and more comfortable building environments without disturbing family or neighbors Specification: Item Type: Concrete Nail Gun Kit Material: Rubber, high speed steel, aluminum alloy Silencing Level: 40dB Working Pressure: 4 Levels adjustable Applicable Nail Length Range: Approx. 32 ~ 57mm / 1.26 ~ 2.24in . Package List: 1 x Nail Gun 1 x Handle 3 x Springs 1 x Safety Glasses 1 x Brush 1 x Spiral Lock 1 x Silencing Steel Sleeve 1 x Firing Pin 5 x Extension Rods 1 x Limit Pin 1 x Brake Pin 1 x Hex Wrench 1 x Storage Box