This is an Ever flow Supplies nipple fitting with male threaded ends, which is made of brass. This close nipple is 1-1/8" long, with virtually no pipe between the two threaded ends. The nominal pipe size diameter is 1/2" and it has a wall thickness which is specified as Schedule 40. The Part conforms to ASTM standard B679 and all applicable ansi standards, with the threads of the nipple conforming to asme standard B1.20.1.