QWORK HVAC Valve Core Remover/Installer Tool - Dual Size SAE 1/4" & 5/16" Ports, Compatible with R22, R410a, R134, R32 Air Conditioning Systems. Publisher: QWORK. Dual Port Sizes: Equipped with dual size SAE 1/4" & 5/16" ports, accommodating various HVAC applications with one comprehensive tool.
