Powerful single shot, hammer driven powder actuated tool. Fastens wood to cement, metal to cement or metal to metal. Instantly drives fasteners into place with a single blow of a 1 lb hammer. Uses standard 0.22 caliber medium load single shot powder loads. Quiet, shock absorbing system lowers recoil for operator comfort. Funnel-shaped handle provides a large target while protecting hands. Positive barrel and load retention prevents barrel from opening freely, allowing easy horizontal and overhead fasting. Pin capacity of 2-1/2 in (3 in with washer).