Features: 1. Made of high quality movement, durable to use. 2. Exquisite workmanship and stable performance, it is a great tool for you. 3. Wear-resistant aluminium alloy body ensure long service life. 4. Reinforced alloy cylinder provides large storage capacity and strong strength. 5. Powerful pull spring is elastic which can effectively reduce vibration. 6. Suitable for casting sand cleaning and welding front opening groove, welding slag, flat solder scar, correction of stone, concrete and brick wall opening work. Specification: Condition: 100% New Impact Number: 4500rpm Air Consumption: 114L/min Working Pressure: 6-8KG Cylinder Stroke: 150mm Inlet Port: 1/4" Blade Shape: Hex Weight: Approx. 1539g / 54.3oz Scraper Knife Length: Approx. 12cm / 4.7in Package List: 1 * Air Hammer 4 * Scraper Knife 1 * Inlet Port 1 * Spring Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.