EASY INSTALL: Counterclockwise switch round knob to retract internal pin. Screw the can tap dispenser on R134a can opening and hook it to R134a charging hose parts. Clockwise switch round knob until the pin punctures sweet spot of bottle opening.
This product would be ideal for automotive applications requiring a R134A can tap valve with a self-sealing and puncture-resistant style, especially when combined with compatible A/C accessories.
