Mastercool 58531 - R134a Standard & JRA (M6) Valve Core Kit

This R-134A Valve Core Remover and Installer allows the user to remove and install any R-134A valve core while the system is under pressure.

• Covers all R-134A valve cores
• Heavy duty metal construction
• No refrigerant loss
• Includes blow molded case
• Eliminates the need to remove freon from the system.