Extender Inflat 1 2 Leg 12 For 7450AD & 7450AS Training Stairs Ramps INTELECT LEGEND XT SYSTEM WITH Wrist and Hand INTELECT LEGEND XT SYSTEM WITH CART * 4 Channel Combination * Easy to add modularity allows the addition of two additional channels of electrotherapy light therapy or a battery module * High contrast 5 (13 cm) FSTN LCD monochromatic user interface * Two independent electrotherapy channels expandable to four independent channels * Multiple waveform electrotherapy six clinical waveforms: Interferential Premodulated High Volt Russian Symmetrical Biphasic and Microcurrent * Documentation of treatment data with Patient Data Cards * User defined protocols for your specific needs * Dual frequency ultrasound at 1 or 3 and applies to the hospital wards or family daily health care This inflatable extender will fit #7450AD & 7450AS