USE: Suitable for casting sand cleaning and welding front opening groove, welding slag, flat solder , correction of stone, concrete and brick wall opening work EXQUISITE WORKMANSHIP: Exquisite workmanship and stable performance, wear aluminium alloy body long service life, it is a great tool ELASTIC: Powerful pull spring is elastic which can effectively reduce vibration INCREASE IMPACT: Impact number is 4500rpm, air consumption is 114L/min, working pressure is 6-8kg, more powerful, stable output power : Made of movement, to use, reinforced alloy cylinder provides large storage capacity and strong strength Features: 1. Made of movement, to use. 2. Exquisite workmanship and stable performance, it is a great tool . 3. Wear- aluminium alloy body 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 , correction of stone, concrete and brick wall opening work. Specification: Condition: Impact Number: 4500rpm Air Consumption: 114L/min Working Pressure: 6-8KG Cylinder Stroke: 150mm Inlet Port: 1/4 inch Blade Shape: Hex Weight: . 1539g / 54.3oz Scraper Knife Length: . 12cm / 4.7in Color: silver material: metal Package Contents: 1 x Air Hammer 4 x Scraper Knife 2 x connectors 1 x Spring Note: Please note that the new type and old type of this product be sent randomly, and make sure you not mind before ordering. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.