These combination nipples are often referred to as KC nipples or King Combination nipples. KC Nipples are very versatile hose/pipe fittings found in a wide range of industries such as agriculture, irrigation and petroleum. These fittings are used to connect a hose to NPT threads. This combination nipple fitting has a 2″ hose shank on one side to connect to a 2″ ID hose. It has male NPT threads on the other side to connect to female NPT threads. This fitting is made of zinc plated steel.