• Package content: 3 packs BPV-31 piercing tap valve kits (each kit contains 1 piercing valve, 1 hex key and 2 adapters), including R134a U-charge hose with gauge and can tap, universal retrofit valve with a dust cap, 5 packs in total, bring you more convenient for replacement; All our replacement kits are made of corrosion-resistant metal that won't wear out or rust over time, with anti-leaking design that will be safer for you
• Easy to install: our BPV-31 piercing tap valve kits come in compact design that only requires a 2-inch clearance area for installation and use, and you only need 1 hex key wrench (included) to install the kit; If you want to attach the gauge with BPV piercing tap valve, you need a retrofit valve (included)
• R134a Charging hose: 19 inch hose with R-134a can to R-12/R-22 service port connection, 1/2 inch end fits R12, 22, 502 fittings; And the gauge has scale readings for R134, R12, and 22. 90-degree push and lock coupler with auto shut off
• Replace model of BPV-31 piercing tap valve: AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31; Compatible with 1/4 inch, 5/16 inch, 3/8 inch outside diameter pipes
• Universal retrofit valve: the retrofit valve converts from R-12 to R-134a air conditioning system and suit for 7/16 inch low side port; Suit for vehicles pre-1994, comes with R-134a refill fittings