1. Banana Plug to Medium Test Hook Wire Cable can be used in electrical or laboratory electric testing work. 2. Banana Plug to Test Hook Wire Cable are frequently used in school physics laboratories to quickly and cheaply assemble circuits.They are useful for connecting components to wires. 3.The Voltage: 500V;Current:5A; Banana Plug: 4 mm. 39.3 inches Length 4. Easy for installation and safety for use with the insulation plastic boots covered. 5. If your an auto technician then you haveto add these to your toolbox .They work well with a meter. Specification: Color:Black and Red Length: 39.3 inches(100cm) each Banana Plug size: 4mm Cable Material: soft PVC Voltage/Current: 500V/5A. Application: testing Package Includes: 4 Pieces Banana Plug to Test Hook Wire