2-1/2" Typ D Nockenbohrkupplung x Innengewinde NPT | Tough-Tite | Aluminium

The threads on the NPT end catch cleanly and seal on the first wrap of tape, which saved me time during my setup. The aluminum body is light enough to handle easily but feels solid when connecting and disconnecting from the hose.

I was pleasantly surprised by how smoothly the NPT threads engaged—no cross-threading issues like I've had with cheaper brass fittings. The aluminum body feels sturdy enough for heavy use yet is noticeably easier to handle than steel. Hooked it up to my water transfer line and it sealed first try wi

Swapped out my old plastic coupler for this aluminum one and the difference in build quality is night and day. The hand-tight connection feels solid, no wiggle at all, and the threaded port hooked up perfectly to my NPT fittings.