[R134A CHARGING HOSE] The R134a Charging Hose is 19.68 inch with a 2.75 inch Conditioning Gauge, connecting R-134a can to R-12/R-22 service port. The 1/4 inch end fits R12, R22, and R502 fittings. The gauge includes scale readings for R134, R12, and R22. [BPV31 PIERCING VALVE] BPV31 Piercing Valve for HVAC systems, 3-in-1 line tap piercing valve that fits three sizes of tubing: 1/4 inch, 5/16 inch, and 3/8 inch. [ADAPTER] 1/4 to 1/4 inch adapter with valve core. 1/4 inch male to 5/16 inch female adapter designed for mini split system conditioners, HVAC, and refrigeration applications. [PREMIUM QUALITY] This replacement part is constructed 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 Note: The package includes only the items listed above. Other products are not included. Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.