1.Item&Model:pneumatic hammer C41-16KG 2.ISO9001:2000 3.certificate for product ... of two compress jar with one pole,double forging hammer*With sample structure, it can be operated, shipped, ... installed and maintained easily*Hammer is composed of hammer bady, chopping block, driver, operation, lubricate, electrical ... dimensions(L*W*H)mm584*390*952 pneumatic hammer C41-16KG