For R134A refrigerants. 1 x Red high side adjustable A/C R134a Quick Couplers. 1 x Blue low side adjustable A/C R134a Quick Couplers. Coupler Interface Fits with R134 Service Ports,1/4"" Male Flare. It focuses on researching and developing various performance products, such as, high-performance racing car’s connecting rod, crankshaft, piston, suspension and air spring.
