[R134A CHARGING HOSE] The R134a Charging Hose is 19.68 inch with a 2.75 inch Air Conditioning Gauge, R-134a Can to R-12/R-22 service port connection, 1/4 inch end fits R12, 22, 502 fittings. And the gauge has scale readings for R134, R12, & 22. [BPV31 PIERCING VALVE] BPV31 Piercing Valve (Not Part Number) 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 Adapter with valve core, 1/4 inch Male 5/16 inch Female Adapter fits Mini Split System Air Conditioners, HVAC and Refrigeration. The replacement part is made from durable high-quality material. 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 male 5/16 female adapter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.