1PCS SPU-4 Pneumatic Check Valve for Air Compressor - Quick Connect Air Pipe Plug Fitting for Industrial Tools, HVAC Systems & Pneumatic Equipment

In terms of use, it will not rust, leak, resist oxidation in a humid environment, and the hard shell is economical and durable.

Various styles and complete models are suitable for many occasions and have a wide range of uses!

Complete specifications, easy to match