Robinairs No. 18561 Air Conditioning Valve Core Remover and lnstaller is the ideal tool for replacing damaged valve cores or for performing A/C or refrigeration service that necessitates valve core removal. Simply threads onto 1/4 inch male flare access fittings to allow removal or installation of valve cores without loss of refrigerant - saving time and money. Durable, solid brass tool incorporates 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. Tool features deep knurling for a positive grip that enables quick finger loosening and tightening. Compatible with multiple refrigerant types used in automotive, household, or commercial applications. Robinair, a Bosch Automotive Service Solutions brand, is a global leader in service tools and equipment based in Owatonna, Minnesota. Robinair is recognized throughout the world as the quality and performance leader in AC/R evacuation tools and this position has led to its success with the full range of products that serve the heating/ventilating/air conditioning/refrigeration (HVAC-R) and mobile markets.