Replacement valve cores for valve core removers & installers. Consists of: 0377-001: Standard Access Valve Core R12/R134a/R1234yf (20 pcs) 0378-001: GM Large Bore Valve Core R12/R134a/R1234yf (10 pcs) 0531-001: R134a/R1234yf JRA High/Low Import Valve Core M6 (10 pcs) 0769-001: R134a/R1234yf Domestic Eaton SSV High Flow Valve Core M10 (5 pcs) 0768-001: R134a/R1234yf Domestic Eaton SSV […]