MASTERCOOL UNIVERSAL VALVE CORE REMOVER/INSTALLER KIT(MC91498)
 
(For High Pressure Refrigerants) R410A
Newly designed with 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 molded carrying case, this kit also offers ½”-20 UNF and ¼” flare fittings for all refrigerant applications. PATENT #6,253,436
 
 Instructions