The Ultimate Hi-Flow Core Removal Tool is a professional-grade, vacuum and pressure-rated valve core removal accessory designed for HVAC/R service, refrigerant recovery, and system evacuation. By removing restrictive valve cores, it provides true full-flow system access, significantly increasing both recovery and evacuation speed as well as the achievable depth of vacuum. It also allows connection to a vacuum gauge as close as possible to the unit being evacuated. This tool will improve service time on any system that relies on a Schrader valve for refrigerant access.