Model 73087 series jumper test lead set. Each jumper test lead set includes one sheathed 4mm banana plug to sheathed 4mm banana plug test lead and one sheathed 4mm banana plug to sheathed 4mm banana jack patch cord. Flexible jumper test lead sets are perfect for conducting peer-checking system tests with test point check before final connection. Plug and housing are molded directly to the cable in an integral one piece design and wire is double crimped for a long lasting connection. Multi-leaf banana spring is beryllium copper, nickel-plated for extended insertion cycle life and low contact resistance.