Features HeartStart Adult SMART Pads are appropriate for cardiac arrest victims weighing 55lbs or more Pads should be replaced after each use, or once every (2) years Cartridge can be easily snapped into the OnSite AED, making replacing your electrodes easier than ever Convenient "Pull" handle makes access easy and time efficient Holds one set of adult electrode pads Application : Replacement Defibrillator Pads Cartridge For Use With : For use with Philips M5066a, M5067A, M5068A User : Adult