[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 are made of corrosion-resistant metal that resists wear and rust over time, featuring an anti-leaking design for enhanced safety. [PIERCING VALVE KITS] BPV-31 Refrigerator Tap Valve compatible with 1/4 inch, 5/16 inch, and 3/8 inch outside diameter pipes. Replaces AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31. Each kit includes 1 piercing valve, 1 hex key, and 2 adapters for convenient use. [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 male end for connecting to R134a can tap and female end for connecting 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 refrigerator male ports. Equipped with a color-coded dial gauge displaying pressure readings for R134, R12, and R22 refrigerants. [WIDELY APPLICATION] This recharge kit is designed for use with home cooling systems utilizing R-134a, R-12, and R-22 refrigerants. With the included R134a self-sealing adapter, the kit is compatible with both piercing cans and self-sealing cans, providing versatile service options. Colour: 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 in color between the image and actual item. Measurement tolerance is +/- 1-3 cm.