[PREMIUM MATERIAL]Made of high quality metal with great rust-resistant and anti-leaking performance. The hose is made of rubber,good pressure resistance, safe to use.both of the kit are made of corrosion-resistant metal that won't wear out or rust over time, and anti-leaking design that will be safer for you. [ PIERCING VALVE KITS]BPV-31 Refrigerator Tap Valve Compatible with 1/4 Inch, 5/16 Inch, 3/8 Inch Outside Diameter Pipes, Replace for AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31,A practical kit and convenient for you to use,Each kit including 1 piercing valve, 1 hex key, 2 adapters. [RH R134a Self-Sealing Adapter]Through the r134a self-sealing adapter, the r134a can tap off the refrigerator charging hose can compatible with r134a self-sealing cans. Male to connect the r134a can tap, the female to connect self-sealing cans. [REFRIGERATOR FREON RECHARGE HOSE WITH GUAGE]One side of the refrigerant charging hose is piercing r134a can tap to directly connect puncture refrigerant cans, the other side is 1/4 SAE female port to connect refrigerator male port. And the colored dials with enheit gauge has scale readings for R134/R12/R22 as the gauge show. [WIDELY APPLICATION]This recharge refrigerator kit usually used for home condition refrigerant systems with R-134a R-12 R-22 types freon. With the r134a self sealing adapter, this refrigerator freon recharge kit can compitable with not only piercing r134a cans but also self sealing cans. Maximize to your needs as much as possible. Colour: blue+silver Material: rubber+metal Package Contents: 1 * r134a freon recharge hose with guage 2 * bpv-31 piercing tap valve 1 * RH r134a self-sealing 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.