He lists it as SP249. In my catalog (not current) it is on page 160. You have to give them the exact specs, and they have it custom-made by some local guy who cuts nylon gears in a small metal housing, with the correct in and out threads. I have ordered two over the years. One was wrong, and they took it back no questions asked, and replaced it. Second one was on the mark.
As I tell my wife, "In for a dime, in for a dollar."
She laughs, which actually is a good thing. Good luck!
Harry
