1. The air hammer isused for forging and shaping work pieces 2. The air hammer is easy to operate through controlling the travel of topswage by a foot rest lever. 3. Its models range from 16KG to 150KG 4. It is widely used for general forging works, such as drawing out, upsetting,punching, chiseling, forging, welding, bending and twisting 5. It is also used for forging in bolster dies.