Robinair 18560 A/C and Refrigeration Valve Core Remover/lnstaller Robinair Air Conditioning Valve Core Remover and lnstaller - the ideal tool for replacing damaged valve cores or performing A/C or refrigeration service that necessitates valve core removal Attaches to 1/4 inch male flare access fittings and allows valve core removal and replacement without loss of refrigerant Durable, solid brass tool has a ball valve that can be opened and closed in just a quarter-turn, rather than a slower to operate stem-type valve Ball valve features a corrosion resistant stainless steel ball for smooth action and a reliable seal Durable brazed side fitting allows system access for various A/C service procedures