Max4out Mountain Bike $19.99 Make sure this fits by entering your model number. 【STURDY AND DURABLE】The AB wheel is made of stainless steel , non-slip rubber and durable PVC.Add three grooves to the handle to better fit your hands.The unique design of the wheel surface makes it more durable. I believe it will bring you excellent experience. Enjoy the thrill of abdominal muscle tears. 【PORTABLE PRACTICAL】Abdominal Wheel is a good exercise equipment that can help strengthen core and tighten abdominal muscles, and you can also use it for shaping shoulder,chest ,back,the upper arm and belly.Portable and easy to store.