1、Made of premium chromium molybdenum steel, high hardness and long service life. 2、5 kinds of different shape air hammer chisel, provided the needs of different jobs. 3、Excellent quality air hammer chisel, it can used with a pneumatic tool. 4、Ideal for masonry and concrete demolition, hard surface break up, chiseling and removing welding spots, rust, hardware cutting, drilling and so on. 5、Universal size, 10cm/0.4in round shank chisels are suitable for 150/190/250 air hammer. Features: Made of premium chromium molybdenum steel, high hardness and long service life. 5 kinds of different shape air hammer chisel, provided the needs of different jobs. Excellent quality air hammer chisel, it can used with a pneumatic tool. Ideal for masonry and concrete demolition, hard surface break up, chiseling and removing welding spots, rust, hardware cutting, drilling and so on. Universal size, 10cm/0.4in  round shank chisels are suitable for 150/190/250 air hammer. Specification: Material: Chromium molybdenum steel Weight: Approx.474g/ 16.7oz Length: Approx.125mm/ 4.9in Shank Dia.: 10mm/0.4in Package List: 5 * Air Hammer Chisel Note: Please allow slight error due to manual measurement. Thanks for your understanding.