Durable construction: Reinforced materials engineered for demanding automotive environments. Withstands repeated use while maintaining structural integrity. 4mm banana plug compatibility: Securely connects to standard 4mm banana plugs with stable conductivity, enabling precise multimeter readings during car diagnostics. reliability design: Optimized contact points deliver consistent performance in challenging conditions, reducing signal interference for dependable automotive testing results. Essential auto accessory: A practical companion for vehicle electrical system diagnostics, enabling efficient circuit testing, battery checks, and component troubleshooting in professional settings. Use scenario: In the workshop, verify battery health and charging system by testing voltages and continuity with a multimeter, ensuring reliable operation before repairs or replacements. Use scenario: Inspect wiring harnesses and sensor circuits behind dashboards or in engine bays to locate opens, shorts, or resistance paths without removing components. Use scenario: Confirm proper circuit function after component replacement or by retesting continuity, resistance, and voltage to validate quality and prevent roadside failures.