An insulated metal wire(s) designed to conduct electrical signals between a skin electrode(s) or needle electrode(s) [electrode not included] and a device designed for electrophysiological recording/monitoring [e.g., electromyography (EMG), evoked potentials (EP), bioelectrical impedance]. It is not primarily intended for diagnostic electrocardiography (ECG) or electroencephalography (EEG) and is not a dedicated neuromuscular transmission (NMT) lead set. This is a reusable device.