Features 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 adapter 4、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 Material: ABS + Red Copper Color: Red, Black Model: U48 Total Length: Approx.35mm / 1.38in Jack Diameter: Approx.4mm / 0.16in Application: Electricity numerical test Package List 2 x Female Banana Plug