This product is a box containing 25 black pipe nipples, each measuring 3/8" in nominal pipe size and 3-1/2" in length. Made of steel with a Schedule 40 rating, these nipples are suitable for applications involving non-potable water, oil, steam, and gas. With a maximum operating pressure of 300 psi at 150 degrees F and a maximum steam pressure of 150 psi at 360 degrees F, these nipples are designed for use in various plumbing and industrial settings. Manufactured in the USA, these black pipe nipples are welded and coated for durability and reliability.