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. Patent# 5,370,359.

• High-Side Manual R134a M12 x 1.75 x 16 mm Quick Coupler.