Mastercool 82934-E Service Coupler Low Side Blue R134a Manual 1/4 Fl-m X 13mm

Patented manual couplers adjust easily to R134a service ports with varying dimensions. All metal construction for extra durability. Patented, spring loaded depressor will not damage service valves. Can be removed from service ports regardless of knob position without losing refrigerant.

• Meets SAE, UL and EPA requirements for containment of refrigerant
• Color coded.