The 9000 XT wheelchair is a high performance, low-maintenance and low total lifetime cost product. The 9000 XT is simply the most versatile lightweight wheelchair available and is the model of choice. This wheelchair boasts a vast offering of frame styles, seat-to-floor heights, back styles, widths, depths, frame colors and a wide range of options and accessories. The 9000 XT components are interchangeable with all other 9000 series and Tracer series chairs. Dual axle positions allow variations of seat-to-floor heights.Durable, low-maintenance, chrome-plated, carbon steel frame with aluminum crossbraces.Multiple frame color variations for customizing Offset axle position allows adjustment of center-of-gravity to increase maneuverability and stability to meet each user skill level. Urethane rear tires, mounted on "no flex" wheels, offer superior performance