- Patented manual couplers adjust easily to R-134A 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 recommendations for containment of refrigerant
- Color Coded
R-134A rugged and durable high side coupler for professional technicians.