These Digital Ring Electrodes are used for sensory nerve stimulation or recording from fingers. Conductive gel should be used on each ring. The product consists of two adjustable “noose” electrodes, with separate black and red silicone wires of 1m long, terminating in safety DIN 42 802 connectors. They are packed as a pair and are available gold-plated or in durable stainless steel. Packing: 1 pair per package.