The Link Ab Crunch/Back Extension is an incredible addition to any gym, facility or home workout studio. It is designed to target the abdominal and back muscles. The 12 range of motion settings ensure proper starting point for both extension and crunch exercises. The chest/back roller pad is large in size to ensure comfort and proper alignment. The adjustable foot platform adjusts to ideal position for both extension and crunch exercises. The counterbalanced exercise arm allows lower starting weight and easy arm adjustment. The back extension handles, and angled seat hold you in position during exercise.