Converts BNC based test instruments to double binding posts with banana jacks. Binding Posts can be vertically and horizontally stacked for test versatility. Wires, spade lugs, pin tip plugs and bananaplugs can be attached by means of the insulated knurled thumb knob. Insulated thumb knob is captive to preventmisplacement. BNC features Nickel Plated, Beryllium Copperfor tarnish resistance & long insertion life.