The Physio-Control LIFEPAK® Series 12/15/20 Pediatric Defibrillation Pads Quick Combo RTS are designed for use with Physio-Control LIFEPAK® 12, 15, and 20 defibrillators. These pads are for use on pediatric patients weighing 0-15kg (0-33lbs). They feature a QUIK-COMBO connector for quick and easy connection to the defibrillator. The pads are radiotransparent, so they can be used during X-ray imaging.