Mastercool 58490 R134a Valve Core Remover/Installer Kit – Works Under Pressure – Covers Standard, JRA, Eaton Cores – Includes Shafts, Adapters, R134a Fittings & Case

✔️ SERVICE VALVE CORES UNDER PRESSURE – Remove and replace valve cores without discharging the system using built-in shutoff and ball valve control.. ✔️ UNIVERSAL R134a COVERAGE – Works with standard valve cores (0.210-36), JRA (M6 x 0.75), and Eaton-style cores (8mm & 10mm threads).. ✔️ COMPLETE ADAPTER SET INCLUDED – Comes with high and low side R134a connectors (13mm and 16mm), plus multiple shafts and adapters for maximum coverage.. ✔️ IDEAL FOR PROFESSIONAL TECHNICIANS – Designed for full system compatibility across most R134a passenger vehicle platforms.. ✔️ DURABLE, FIELD-READY CONSTRUCTION – Features brass body, stainless steel ball valve, and hardened steel shafts.. ✔️ INCLUDES MOLDED CARRYING CASE – Keeps all adapters, shafts, and connectors organized and protected.. ✔️ ORIGINAL MASTERCOOL DESIGN – Built on patented technology originally developed by Mastercool, trusted by professionals for decades.. ✔️ TRUSTED QUALITY AND U.S. SUPPORT – Mastercool delivers over 40 years of A/C service innovation with responsive, U.S.-based customer support and technician-first design.