The 1166-48-2 is a 48-inch Test Lead with alligator clip to 4mm multi-stacking banana plug patch cord. The alligator clip with nickel-plated steel, vinyl insulator boot, nickel-plated brass body, 18AWG stranding PVC insulated 3.66-inch outer diameter wire. The stacking banana plug with nickel-plated beryllium copper spring for long insertion life, polypropylene moulded insulation for plug body and wire, insulated. The patch cord features a medium size alligator clip with a flex boot for insulation protection. The wire conductor has a high number of strands for excellent wire flexibility. The banana plug is moulded directly to the wire for added pull strength.