The Power Probe PPTK0003 set includes two 4mm banana jacks designed for automotive electrical testing. The yellow connector supports 8-18 gauge wires, while the green connector is intended for 20-28 gauge wires, providing clear color coding for quick identification. Both connectors use a standard 4mm interface for secure, stable connections with Power Probe tools and accessories. The wide gauge compatibility allows technicians to handle a variety of diagnostic tasks without switching between different connector types. Built for professional electrical troubleshooting, the PPTK0003 set improves workflow efficiency and ensures reliable contact during circuit testing and probing.