The product is a box containing 25 new MATCO NORTICA black pipe nipples, each measuring 1/4" x 5-1/2" with a Schedule 40 rating and a maximum steam pressure of 150 psi at 360 degrees Fahrenheit. These steel nipples are designed for non-potable water, oil, steam, and gas applications, with a continuous weld construction and a black anodized finish. Made in the USA, they have an inside diameter of 31/64" and an outside diameter of 43/64", suitable for use in air systems with a maximum operating pressure of 300 psi at 150 degrees Fahrenheit.