AMBU BLUE SENSOR RESTING EKG ELECTRODES (M-00-F) - These electrodes come with built-in adapter for (.125) straight-pin lead ends. 34mm diameter. Offset connection delivers superb trace. Wet gel. High performance adhesive. Ag/AgCl sensor. 50/BG, 20/BG/BX, 2BX/CS. Priced per bag.