[PREMIUM Material] made of high quality metal with excellent rust resistance and air tightness. The hose is made of rubber, good pressure resistance, safe to use. Both kits are made of corrosion-resistant metal that will not wear out or rust over time, as well as preventing leakage. [Puncture Valve Kits] BPV-31 refrigerator faucet valve compatible with 1/4 Inch, 5/16 Inch, 3/8 Inch outer diameter pipes, replace with AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31, practical kit and convenient to use, each set includes 1 piercing valve, 1 hex wrench, 2 adapters. [RH R134a Self-sealing adapter] through the self-sealing adapter r134a, r134a can tap out the refrigerator, the supply hose can be compatible with r134a self-sealing cans. The male to connect the tap can r134a, the female to connect the self-sealing cans. [Refrigerator Freon Charging Hose with Gage] on one side of the refrigerant