Feature:1. The operation is simple, the connection is fast, the contact is reliable, and no complicated connection process is required.2. High quality materials, high reliability, strong vibration resistance, excellent mechanical and electrical properties, etc.3. Precise manufacturing, precise size, perfect fit for banana plugs. Can connect all standard 4mm banana plug adapter4. These 4mm female banana plugs are made of high quality ABS and red copper, durable and can be used for a long time.5. Suitable for engineers or DIY enthusiasts. Perfect for electrical testing in schools, homes, laboratories and factories.Specification:​Item Type: Female Banana PlugMaterial: ABS + Red CopperColor: Red, BlackModel: U48Total Length: Approx.35mm / 1.38inJack Diameter: Approx.4mm / 0.16inApplication: Electricity numerical test.Package List:2 x Female Banana PlugNote:1. Please allow 1‑2mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.