Remove and install the valve core from a 1/4" SAE male flare access fitting without the loss of refrigerant or in situations where Fast evacuation or charge is desired. Schrader core fittings only allow 1.2 CFM flow, removing the core dramatically improves the speed of recovery, vacuum and charging. Durable, solid brass tool has a ball valve that can be opened and closed in just a quarter-turn, rather than a stem-type valve. Designed with a stainless steel ball and brazed side fitting for durability and long life. (This tool has 1/4 Flare fittings on all ports).