Disposable subdermal curved hook needle electrodes by Technomed, designed to stay in place during intraoperative monitoring or evoked potentials. For recording and stimulation. Bent uncoated stainless steel needles, 21mm x 26 gauge (0.45mm dia). 2 meter wire (5 colors) with touch-proof sockets. Sterile, single patient use. 3 year shelf life. Box of 25.