This Lead Wire Set is an accessory to EVO series. Used for both the Therasound and Winner EVO devices, these wires attach directly to the channel ports. This ensures maximum utilization by being able to run channels of electrical stimulation, ultrasound and laser and/or light. The Lead Wire Set contains of 2 pairs of lead wires, with each pair having both red and white lead wires. Every single lead wire is 6 feet in length.