These disposable ECG electrodes are to be used with button adapters. The latex-free and PVC-free adhesive ECG electrodes offer the best possible attributes in regards to skin friendliness, optimal contact and signal stability. Because these ECG electrodes are disposable, the risk of cross contamination and infectious transmission through the electrodes is eliminated.Product Details Foam electrodes Secure contact Good conduction quality Easy to use Hygienic disposable item Conductor: foam (Ag/AgCl) Diameter: 55 mm 1 Package contains 50 pieces 128186 4260306773619 ukmedi