AMBU BLUESENSOR L (100 Count)Product Information: Blue Sensor L Electrode, Snap Connector, Wet Gel, Microporous Backing, Long Term, 55 mm, 25 Units Pack x 4 Packs Manufacturer Part #: L 00 S 25 Description Electrode with double ring adhesion developed to provide fast and reliable trace without the need for skin preparation for maximized patient comfort and user convenience Offset connector allows movement of connected cable without affecting electrode's performance Skin friendly