Sterile disposable needle electrodes by The Electrode Store. 50mm (2") x 26 gauge coated needles with 3.5mm uncoated tip exposure. 36" (0.9m) lead-wires, standard safety sockets; dark gray cap. Compatible with PRO-S95: One-handed recapping stand.Single patient use only. 3 year shelf life. 10 individually sealed peel-pouches (half red, half black).