These disposable cloth base electrodes have a circular contact area of 1cm diameter on a 2.5 cm square backing. They adhere well and are particularly useful for applications on non-conforming surfaces, such as the face for EMG or fingers for nerve conduction studies. The adhesive solid gel ensures good contact, and the silver-silver chloride (Ag-AgCl) electrodes provide accurate and clear transmission of surface biopotentials. Use these comfortable and conforming electrodes in EMG, nerve conduction, ECG, sleep studies, exercise physiology, etc. The latex-free, hypoallergenic electrode is repositionable and suitable for long term use without irritation. Quantity: 30. (Available at a discount in quantities of 300. See EL504-10.) EL504 Cloth Base EMG Electrodes 2.5cm sq. - EMG (Pkg. 30) EL504$25.00 Same Day Shipping - orders with UPS Red or Blue shipping will be shipped the same day if received by 3 p.m. PT (Monday-Friday).