Designed for facial, auricular or body treatments, these 5” probes are a great accessory for your electro-therapy device. Probes are versatile, as they contain space for Q-tip probes for facial stimulation, or you can use the 2 mm diameter metal probes (included) for auricular and body stimulation. Two Cotton Tips are also included. Probes contain 3.5 mm jack and 135 cm (54”) lead wire.