AB Fitness with King Board is very easy to exercise your ABS and loss weight. Product Name:AB Fitness with King BoardProduct Item:SY920Specifications: 1) Materials: PVC, ABS, steel 2) Exercises your abdomen, simultaneously strengthens your thigh, arm and back 3) Other machines only give you a 90 degrees range of motion, but king body Building equipment can offer an amazing 200 degrees range of ...