Mastercool 91498 Universal Valve Core Remover and Installer.

Product Description:

For High-Pressure Refrigerants like R410A. Newly designed with a patented locking mechanism, the 91498 is the only valve core remover kit that has a safety nut allowing the technician to freely access the valve core without fighting high pressures. Packaged in a blow moulded carrying case, this kit also offers 1/2-20 UNF and 1/4 flare fittings for all refrigerant applications. PATENT #6,253,436