1、Long: 3 pieces 150cm/59.1 inch hoses in red, blue, and yellow are easily distinguishable, with red for high pressure, blue for low pressure, and yellow for refrigerant bottle. 2、Sturdy and High Performance: Made with 3x1.5m bonded nylon resin hoses that are anticorrosion, low fluid resistance, and can withstand high pressure, ensuring durability and excellent sealing. Maximum working pressure of 500 PSI. Brass 1/4in female fittings provided on each side for easy connection. 3、Easy Identification: Red hose connects the red 1/4in male end of the gauge to the red quick coupler, blue hose connects to the blue quick coupler, and yellow hose connects to the tank valve or vacuum pump. The color coding makes it easy to identify the high pressure, low pressure, and refrigerant bottle connections. 4、Sturdy Construction: Made with copper, PVC, plastic materials, this refrigerant charging hose is more sturdy and can withstand frequent use and accidental damage, making it suitable for