Skintact F-55 Electrode Foam Electrode Gel coated (self-adhesive) 55mm diameter They are suitable for electrocardiographs, stress tests and Holters They are manufactured by Skintact with C-LINE technology which eliminates interference during ECG recording The self-adhesive Skintact F-55 ECG electrodes are round, connected with a snap connector, have a diameter of 55mm, feature a conductive Aqua-Wet gel coating Sales Packaging: Packet of 30 pcs