Mastercool 58490 Valve Core Service Kit

Mastercool's new 58490 R12/R134a A/C VALVE CORE SERVICE KIT is sure to save time and money! The 58490 allows the user to remove or install the service port valve core without losing the systems charge. This master kit covers R12 and R134a systems. Kit includes five valve core arbors, high and low R134a couplers, ball valve assembly and 1/4', 3/16', 1/8' adapters for R12 systems.