The Jarvis Model USSS-1 - pneumatically operated high speed captive bolt stunner for cattle. •One shot humane stunning procedure. Fires only once - no multiple firing. •Better stunning for improved meat quality. •Air operated with no air injection into animal. •Two hand control for safer operation. •Easy to handle and safe to operate - no recoil or kick back. •Easy to repair and clean. •High strength construction. •Lightweight - tool only weighs 30 pounds (13.6 kg).