It has a hexagonal head for easy wrenching.
It features male threads on the outside and female threads on the inside, typically NPT (National Pipe Taper), to ensure tight seals.
It's made of cast iron for durability and resistance to wear.
Bushings are commonly used in plumbing and industrial applications for adapting pipe diameters.
It can be used to increase the outside diameter of a pipe if it is too small for the coupling being used.
It is often galvanized for rust protection.
It can be used to connect low-pressure pipes.