The Ultimate Hi-Flow Core Removal Y Tool with Sight Glass and Dual Valve is a professional-grade, vacuum and pressure-rated valve-core removal accessory engineered for HVAC/R service, recovery, evacuation and charging tasks. It offers dual-valve functionality, high speed Y flow path for increased flow and a sight glass to witness core removal and installation as well as the safe control of refrigerant during system recovery and charging. Designed to speed up refrigerant recovery, evacuation and charging while reducing tool count and improve workflow efficiency on a wide range of systems.