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 one pound hammer. Uses standard .22 caliber medium load single shot powderloads. 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. Specs: Pin Capacity: 2 1/2 in (3 in w/washer).