Med-Fit Systems 2009 RS-1401  Leg Extension     * Easy-to-use, the gas shock assisted adjustable back pad accommodates varying arm lengths     * Self-aligning roller pad automatically adjusts to reduce potential stress of the ankle joints     * Starts the body in a upright posture, then rocks rearward during the exercise providing a greater       range-of-motion and a more natural hinge movement     * Rocking movement lowers the hips to maintain a posterior pelvic tilt to better load the quadriceps muscle     * Designed to reduce shear forces and stresses to the knee joints and limit lower back muscle involvement     * Labeled pivot alignment points Length:  46.00" (117 cm) Width: 53.25" (135 cm) Height: 60.00" (152 cm) Weight: 665 lbs. (302 kg) 1.800.831.7665 1.800.831.7665 Back