The Mueller Electric red color test lead that has banana plugs that are rear stackable and have high force springs for better retention. They also have a spring loaded clear retractable sheath that provides electrical protection when the cable is not mounted. Wire used is 10 AWG Silicone wire, tinned copper with a highly flexible, 5mm diameter jacket. It has current rating of 45 A, voltage rating of 600 V and length of 36 inches. RoHS 3 compliant