Low impedance sterile disposable subdermal needle electrodes with retractable baby blue safety cap by The Electrode Store. For neonatal to adult EEG or aEEG. 0.5" (12mm) x 29 gauge uncoated steel cone-sharpened, with 48" (1.2m) wire, safety socket. Single patient use. 3 year shelf life. (10 individually sealed needles; 10 colors).