[PREMIUM MATERIAL] Made of high-quality metal with excellent rust-resistant and anti-leaking performance. The hose is constructed from rubber, offering good pressure resistance and safe operation. Both components of the kit are made of corrosion-resistant metal that will not wear out or rust over time, ensuring long-lasting durability and reliable leak-free performance.[PIERCING VALVE KITS] BPV-31 Refrigerator Tap Valve compatible with 1/4 inch, 5/16 inch, and 3/8 inch outside diameter pipes. Designed as a replacement for AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, and MPV31. A practical and convenient kit for easy use. Each kit includes 1 piercing valve, 1 hex key, and 2 adapters.[RH R134a SELF-SEALING ADAPTER] The R134a self-sealing adapter allows connection to refrigerator charging hoses and is compatible with R134a self-sealing cans. Features a male end to connect to the R134a can tap and a female end to connect to self-sealing cans.[REFRIGERATOR FREON RECHARGE HOSE WITH GAUGE] One side of the refrigerant charging hose features a piercing R134a can tap for direct connection to puncture refrigerant cans. The other side has a 1/4 SAE female port to connect to the refrigerators male port. Equipped with a color-coded dial and Fahrenheit gauge with scale readings for R134, R12, and R22 as indicated on the gauge.[WIDELY APPLICATION] This recharge refrigerator kit is commonly used for home air conditioning refrigerant systems utilizing R-134a, R-12, and R-22 types of refrigerant. With the included R134a self-sealing adapter, the kit is compatible with both piercing R134a cans and self-sealing cans, providing versatile functionality to meet various service needs.Color: Blue + Silver Material: Rubber + Metal Package Contents: 1 x R134a Freon Recharge Hose with Gauge 2 x BPV-31 Piercing Tap Valve 1 x RH R134a Self-Sealing Adapter Note: Light and display differences may cause slight variations between the color of the item in the image and the actual product. Measurement may vary by +/- 1-3 cm.