Haltec Large Bore Air Liquid Core Ejector • 1/2" Female NPT • Attaches to Any Calcium Tire Filling Pump • Extracts the Valve Core From a Standard Bore Valve or the Core Housing From a Tractor Valve • Securely Holds the Valve Core or Core Housing Up In the Gun Body During Tire Filling or Evacuation of Liquid From a Tire • The Design Allows Faster Evacuation of Liquid From a Tire Than Other Adaptor Guns • Replaces Deming #1010