Stimulate and record with these disposable concentric hypodermic needle electrodes. This was designed for simultaneous Botox (or other medicine) injection and EMG recording or electrical stimulation. The medical-grade steel tip is sharpened to a facet bevel, and it can withstand multiple insertions on a single patient without degradation. This comes pre-attached to a 29 in /0.75 m wire with DIN 42802 connector. Fits slip-tip and Luer lock syringe connections. Leak-free and minimum residual volume of medication. Latex-free. RoHS compliant. 10 needles per box.