The K-fit Male Adaptor is a rectal probe that can be used by both men and women. It will conduct current directly to the pelvic floor for kegel work. The K-fit Male Adaptor must be attached to an EMS or TENS device to activate and is designed for use with the K-fit Kegel Toner. It accepts 2.5mm connecting pins.
https://www.amazon.com/K-fit-Kegel-Toner-Adaptor-Electric/dp/B016MWX4DO

