Mine has a big stem running thri the opening. The outside looks like the one
pictured except it does not have Dramms written anywhere on the thumb
handle. It's just a thin brass paddle. I bought it to use on my new Bonaire
nozzle. I wanted something that did not have an obstuction in the water
way to lower water pressure. I have another brand that is open but has
a small opening, I think wbout 3/8''. This increases water speed but lowers
volume. I want to control the water volume with my new nozzle.