General description This quick coupler adapter is widely used for most automotive air conditioner diagnostic AC manifold gauge hose service ports, featuring a 1/4 inch male flare and a 6-ball style coupler. The design includes a quick detachable fitting and a 6-ball snap lock, making operation easy and efficient. The kit provides improved tightness and usability, with blue and red switches clearly indicating low and high pressure. Technical specifications Material: Metal Color: Photo Color Measurement allowed error: +/- 1-3 cm Installation Connect the button to the vehicle's R134A service port. Attach the copper adapter with the refrigerant hose. Use the switch at the top to turn the device on/off. Usage Designed for automotive air conditioning systems. Ideal for diagnostic and service tasks. Other information Package Contents: 2x Quick Coupler Adapter Note: Installation guide not included; professional installation is strongly recommended. Product may have slight differences or color