Inclub: 2PCS 1/4" SAE x 1/4" OD x 4" length stem check valve. The stem is a self-contained valve which opens to admit gas to a chamber. Material: Brass and copper. High strength, High temperature resistance, with certain anti freezing and anti impact capabilities.
This product would be ideal for applications requiring access to small diameter metal tubes in a brass or copper fitting, offering a robust and reliable solution.