Product details:

Pipe Nipple Assortment, Pipe Schedule 40, Threaded on Both Ends Pipe Connection Type, Pipe Size - Nominal 1/4 in, Material - Pipe Black Welded Steel, Pipe Thread Type MNPT x MNPT, Max. Pressure 150 psi @ 150 Degrees F, Standards Manufacturing Conforms to ASTM A-733, Material Conforms to ASTM A-53 Type E Grade A, Threads meet ANSI ASME B1.20.1