Wheelchair Anti Tippers for Sentra Recl Silver Sport WC's Wheelchair Ramps An inexpensive and portable exerciser Style:Pair (Left & Right) An inexpensive and portable exerciser for both the upper and lower body * Digital LCD display keeps track of amount of exercise performed including: Scan Speed Distance Timer Odometer and Calories burned * Requires 2 AA batteries (included) * It can be used on the floor for foot pedaling or on the tabletop for hand pedaling * Wide leg spread and non marring feet keep exerciser stable even when patient has little muscle control * Wrap around adjustable foot straps for use with or without shoes * Adjustable tension knob allows for easy changes in pedaling difficulty level * Pedal forwards or backwards * SERIES 503 MAG Anti Tipper w o wheels for use with Sentra Reclining Silver Sport I and II and Chrome Sport Wheelchairs