• This kit allows the user to service valve cores without loosing systems charge.
• Kit covers all R12 & R134a system valve cores for Standard, JRA, Eaton and GM Large Bore.
• Mastercool's unique design offers a locking device that holds the shaft in place while removing or installing the valve core.

Kit Includes: Valve assembly, R134a high side 16mm connector, R134a low side 13mm connector, 1/4" FL swivel connector, Standard valve core remover/installer assembly, GM large bore valve core remover/installer assembly, JRA R134a valve core remover/installer assembly, Eaton R134a low side and high side remover /installer assembly, Adapter 1/4"(M)x3/16"(F) high side GM/Ford, Adapter 1/4"(M)x1/8"(F) high side GM/Ford, Plastic molded box.