The Stäubli 66.9391-05022 is a red, insulated, 4mm banana plug-4mm banana plug test lead with an amperage rating of 32A. It is designed for use in a variety of electrical applications, such as testing circuits, measuring voltage, current, and resistance. The leads are constructed of high-quality materials for a durable product that is fit for a variety of testing purposes. The lead is also equipped with a secure fastening system, such as a clip or nut, for a reliable connection.