Avanos Medical Mic-Key OTW stoma measuring devices enable accurate assessment of gastrostomy stoma tract depth prior to initial feeding tube placement or replacement. Designed for over-the-wire deployment, this sterile diagnostic instrument helps clinical teams select the precise length of low-profile enteral feeding tubes to prevent tissue compression or dislodgement. The single-use device features clear millimeter graduations for rapid, dependable measurements in hospital and outpatient care settings.