Made of plastic and iron, it is durable.Suitable for oscilloscope lead.Double banana jack port for easier recognition, type of screws, no welding. Features: Each product has a label with a number unique manufacturing certificate inside the package confirming that it has been homologated including the reference number, model number and date of inspection. 2. If you have any question about the item, please provide us the manufacturing part number for checking. Made of plastic and iron, it is durable. 4. Suitable for oscilloscope wire. 5. Double banana port for easier identification, screw type, no soldering. Features: Materials: iron and plastic. Colour: black. Dimensions: 6 x 3 x 1.8 cm. Weight: 48 g. Contents: 2 connectors. Note: data are measurements manual, please allow 1-190cm error, due to differences between light and screen, there will be a certain color difference, the specific received in kind prevail.