The K-fit Rectal Probe is just 1/2 an inch in diameter with a 3/4 inch diameter bulb at the tip. It is approximately 3 inches long. This probe can also be used vaginally as needed.The K-fit Rectal Probe must be attached to an EMS unit to activate and is designed for use with the K-fit Kegel Toner. The probe accepts 2mm connecting pins. CONNECTING WIRES ARE NOT INCLUDED WITH THE PROBE ALONE. Our probe's conductive plates are made of surgical grade stainless steel and are considered nickel-free. Please use caution when attaching to a device not intended for pelvic floor work. Use a generous amount of water-based lubricant to ensure proper conductivity, and wash your probe after each use with a mild hand soap. You may also wipe the probe with a disinfectant wipe that is safe for application to the skin, such as rubbing alcohol. Be certain not to bend the wires during use, as this can cause internal breakage. Never submerge the wires in water. 
 
The K-fit Rectal Probe can be safely used with IUD's, such as Mirena. K-fit Electrodes cannot be used; while pregnant, if you have been fitted with an implanted insulin pump, or if you have a pacemaker. Please use caution if you are attaching your K-fit Electrode to an EMS or TENS device that is not intended for pelvic floor work.