This set of Flat Ended Sounds consists of fourteen 7" probes, shorter than the sounds in other kits we offer. They have a somewhat different shape - a slight curve, and the diameters are different as well.They are only usable on one end, since one side is rounded and the other is flat.
The most common use for the flat end would be to hook up an electrode or other electrical components.
This item definitely qualifies as unusual and a little scary by most people's standards. Made of chrome-plated brass, each probe in the series is slightly larger than the one before, for a total of 14 graduated sizes, from approximately 1/8" in diameter to just over 5/8" in diameter.
The original intended medical use for these probes was to dilate the cervix, but they were also used to clear blockages in the urethra. For people with a fetish for bizarre old medical paraphernalia, these kits are a find.