Features High Quality Material: Crafted from premium metal material, ensuring sturdiness and durability for long-lasting usage. Easy Quick Connection: Allows for quick and convenient mounting, saving time and effort during installation. Reliable Precision Threads: The precision threads enhance the reliability of the connection, providing a secure and trustworthy fit. High Pressure Resistance: Designed to withstand high pressure, ensuring that the fittings do not easily detach even under intense conditions. Versatile Compatibility: Suitable for quick connection of 4mm air pipe and pneumatic tools, providing flexibility for various pneumatic applications. Specification: Optional model & quantity: PC4-M5 20pcs, PC4-1 20pcs, PC4-2 10pcs, PC4-3 8pcs Thread: M5, 1/8", 1/4", 3/8" Suitable fluid: Clean compressed air, vacuum Suitable hose: 4mm PU hose, nylon hose Maximum pressure: 1.32MPa Pressure range: Normal use pressure: 0-0.9MPa Low pressure use pressure: -99.99-0kPa Environment and fluid temperature: 0-60℃ Package weight: Approx. 76-111g / 2.7-3.9oz Package list: 1 * Quick Fittings Set Package List