R134A CHARGING HOSE: The R134a charging hose is 19.68 inches long with a 2.75-inch air conditioning gauge. It connects R-134a cans to R-12/R-22 service ports. The 1/4 inch end fits R12, R22, and R502 fittings. The gauge includes scale readings for R134a, R12, and R22. BPV31 PIERCING VALVE: BPV31 piercing valve for HVAC systems. This 3-in-1 tap piercing valve fits three sizes of tubing: 1/4 inch, 5/16 inch, and 3/8 inch. ADAPTER: The 1/4 to 1/4 inch adapter with valve core. Includes a 1/4 inch male to 5/16 inch female adapter, compatible with mini split system air conditioners, HVAC, and refrigeration systems. The replacement part is made from durable, high-quality materials. Color: blue, copper-colored Material: plastic, metal Package Contents: 1 x R134a hose, 1 x BPV31 puncture valve, 1 x R134a low-side quick connector, 1 x 1/4 to 1/4 adapter, 1 x 1/4 inch male to 5/16 inch female adapter. Only the items listed are included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.