This is a galvanized steel nipple with a British Standard Pipe (BSP) thread size of 1/4 inch and a length of 60 mm. It is used to connect two fittings or pipes together, and has a long tapered shape...
The IMPA 730851 LONG NIPPLE GALV. BSP 1/8"x 60mm is a shipping nipple designed for use withGalvanized steel pipes. It is intended for use in applications where resistance to corrosion is required...
IMPA 730813 LONG NIPPLE GALV. BSP 1/2"x 60mm is a galvanized steel nipple that is 1/2" in diameter and 60 mm long. It is used to connect two pieces of pipe together.