Featuring a Double Hammer Mechanism - a powerful and fast assembly for the highest productivity with well balanced hammer mechanism and less torque reaction to operator. The ergonomic design ensures weight balance, a comfortable handle grip and lightweight to fit operators palm. The reversing lever is located at the most convenient position on the handle of each model. Swing-hammer mechanism - powerful and durable impacting mechanism with one piece hammer-pin. Lightweight K series - K series tools are 10% lighter.