This mini air hammer is equipped with 4 different chisel shapes and is ideal for domestic or industrial use. It is easy to use and suitable for removing rust/slag/welding burrs, concrete grooving, stone carving, casting cleaning and more. Portable and compact, easy to carry. Features: Good quality material, precisely assembled, stable performance, long service life. This mini air hammer kit is mainly used for removing rust/slag/welding burrs, concrete slotting, stone carving, casting cleaning, etc. Equipped with 4 different shapes of chisel , suitable for a variety of working needs. 1/4" air inlet, with adjustable air flow; with filter mesh to protect against debris entering the machine. With ergonomic handle and comfortable, easy to use. Compact and portable design, easy to carry. Note: 1. The air inlet is also a lubricating oil filling hole, please fill 2-3cc of special lubricating oil for pneumatic tools and let it work for a few seconds each time before and after use. 2. Please make sure the gas air pressure is between 6.0-8.0 kg/cm2. If the air pressure is too low, the machine may not work; if it is too high, the machine may be damaged. 3. Install a filter to provide clean and dry air to extend the life of the air hammer. Features: Color: Silver Material: die-cast aluminum Connector: JP Piston stroke?: 41?mm Air inlet: 1/4" Working pressure?: 6.0 ~ 8.0?kg/cm2 No-load speed: 4500 rpm Chisel size: 125*10.4mm/4.92*0.41in Item Size: 22.5 * 15 * 4.8 cm / 8.86 * 5.91 * 1.89 inch Package size: 19 * 14.5 * 6 cm / 7.48 * 5.71 * 2.36 inch Package Weight: 1530g/3.37lbs