[R134A CHARGING HOSE] The R134a Charging Hose is 19.68inch with 2.75inch Air Conditioning Gauge, R-134a Can to R-12/R-22 service port connection,1/4inch end fits R12, 22, 502 fittings.And the gauge has scale readings for R134, R12, & 22.<br> [BPV31 PIERCING VALVE] BPV31 Piercing Valve ( Not Part Number)for HVAC System, 3-In-1 Line Tap Piercing Valve for , Fits 3 sizes of tubing: 1/4inch, 5/16inch and 3/8inch.<br> [ADAPTER] The 1/4 to 1/4 Adapter with valve core, 1/4inch Male 5/16inch Female Adapter fits for Mini Split System Air Conditioners, HVAC and Refrigeration.<br> [] The replacement part is made from durable high quality material.<br> Colour: blue, copper-colored<br> Material: plastic, metal<br> Package Contents:<br> 1 * R134a hose<br> 1 * BPV31 puncture valve<br> 1 * R134a low-side quick connector<br> 1 * 1/4 to 1/4 adapter<br> 1 * 1/4 male 5/16 female adapter<br> Only the above package content, other products are not included.<br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.