Model: E7031 Easy to use and easy to own, the Back Extension features a walk-in-and-use design with no adjustments necessary. The lumbar roller pad and pivoting back pad provide a superior, comfortable movement during the full range of motion. Users can easily engage the add-on weight with a simple push of a lever to increase the work load. This unit is designed to get users working out quickly and effectively, with an open design that requires no adjustments.To ensure proper knee/hip alignment and back stabilization, the foot rest is positioned to elevate the user's knees to the correct angle.The movement arm is designed to ensure that a smooth resistance is felt through the entire range of motion, eliminating common dead spots found in similar machines.