Product specification Material:Aluminum,Nylon Working Pressure：450 Psi Working temperature:-40 ℃+120 ℃. Product material SAE J844 DOT APPROVED HOSE - The 1/4" air line made of high-quality PA12 Polyamide, meets DOT Standards and SAE J844 air brake system requirements. Working Pressure Of 1mpa (145 Psi) And A Max Pressure 450 Psi. Working Temperature: -40 ℃+120 ℃. Air Pipe feature l Easy to carry and flexible to install,the air tubing is lightweight,the kit includes 4 types of pipe connnectors to meet different needs.It can be easily inspected for signs of wear or damage and replaced if necessary. l High quality materials,the air pipe is made of durable materials like silicone, polyurethane, or PVC.The surface of it is smooth and bright,can be used constantly and stand high temperature and chemical resistance. l High elasticity, wear-resistant and pressure-resistant, uniform thinness thickness, consistent roundness of the cutting surface to ensure force. Wide range of application The kits are versatile tool used in various industries, including automotive, pneumatic, and aquatics,as well as daily gardening maintainance.they are used in air suspension systems, brake systems, and for operating various pneumatic tools. Industrial applications include automated manufacturing systems, where compressed air is used to power machinery, control valves, and actuators.The adaptability of these kits to different environments and their ability to handle a variety of pressures and temperatures make them a crucial tool in many different fields.