The product is a box of 25 new 1/2" X 6" Black Pipe Nipples, each designed with a Sch 40 rating and a maximum pressure of 150psi. Made of steel in the USA, these nipples have an inside diameter of 31/64 in, outside diameter of 43/64 in, and are suitable for applications involving air, oil, steam, and gas. They feature continuous weld construction, are non-potable water compatible, and have a black anodized finish for durability. These Grade A nipples are ideal for various plumbing and fixture projects in home improvement and gardening.