Blue Anodized Aluminum Adapter, Inch Male NPT Hex Nipple, Straight

Function-wise, it’s a straight inch male NPT hex nipple adapter, so it’s meant to join NPT pipe threads in a straight run, and the hex gives you a place to put a wrench on it during install.

Aluminum all the way through. The blue anodized finish is a surface treatment applied on top of the aluminum construction, not a coating over a different base metal. Anodizing actually bonds into the surface of the aluminum itself, which is what gives it that added corrosion resistance on top of what the aluminum already provides naturally. You're getting a solid aluminum fitting with a hardened anodized layer, not a painted or plated substitute material.

It's a inch male NPT hex nipple.