Well, the only ones I have left are a couple that I hunt with...and they are beat up LOL
The long mouth piece is tapered inside, it looks like a trumpet.
The short round barrel is just a 1/2" straight bore.
The reed is seated at the bottom of the long mouth piece.
I'll see if I can break out the camera and get you a photo as soon as I can. Really not much to them.
In case you were wondering why they are called "Bonkers", it's because I used to hunt with this guy who could not sit still. Never. And he could not keep quiet. And he could not shoot.....
So.......I needed something I could use to "reinforce" the above to him. So I turned these calls with a long mouth piece that I could use as a "handle" and "bonk" that SOB on the head every time he started doing stupid stuff on a stand. Hence the name, "Bonkers".... true story...
AL @ THO