The Bosch 11335K jack breaker hammer delivers 22 ft-lb of impact energy for the ideal material removal rate in class, impressive for a tool that weighs just 38 lb providing 1300 bpm, this 15 A tool has all-metal housing, metal tube and case and it can handle heavy-duty applications such as outdoor asphalt work or indoor foundation removal. It has a Vibration Control™ system, which includes a longer air cushion in the hammer mechanism and a shock-reducing top handle. This tool has a two-way tool retainer that accepts standard 1-1/8 in hex, air tool steel with retaining collar or Bosch internal-locking combo steel. The breaker hammer with included carrying case with wheels is fully mobile and it has Service Minder™ brushes for preventative maintenance reminders.