The K-fit Extended Electrode is a hypoallergenic, insertable electrode probe. It has conductive rings made of surgical grade stainless steel that are considered nickel-free. This probe is 6 inches in total length and 1 inch in diameter. It may be used vaginally or rectally. The K-fit Extended Electrode directs energy to the pelvic floor to facilitate toning, muscle strengthening, and general wellness and works with the K-fit Kegel Toner. The K-fit Extended Electrode must be attached to an EMS or TENS unit to operate and requires a long accesory wire with 2mm pin connectors, PROBE DOES NOT COME WITH ACCESORY WIRE DESIGNED FOR YOUR TONING UNIT.