[R134A CHARGING HOSE] The R134a Charging Hose is 19.68 inch with a 2.75 inch Air Conditioning Gauge, connects R-134a can to R-12/R-22 service port, 1/4 inch end fits R12, 22, 502 fittings. The gauge has scale readings for R134, R12, and 22. [BPV31 PIERCING VALVE] BPV31 Piercing Valve for HVAC System, 3-in-1 Line Tap Piercing Valve, fits 3 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, 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 piercing 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 above package content is included; other products are not included. Note: Light and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may vary by +/- 1-3 cm.