Oileus AB Roller Wheel for Abdominal Exercise Core Workout Equipment with Automatic Rebound Assistance and Resistance Springs with Ergonomic Handle Sold with Knee Pad

Newest Design Oileus AB roller wheel ,Core & Abdominal trainer is finally here! Main Features 1. Automatic rebound, generate resistance when you rolling out, provide assistance on the way back, much easier to use than the standard wheel ab roller. 2. Ultra wide roller belt and solid wood - Up to 500kg Bearing,  provide the most stable core workout experience. 3. Ergonomic Handle, comfortbale and durable. How to assemble Just insert the shaft into the wheels and you can Start your core training Product Size Heigh 13.8 Inch, handle width 14.5 Inch, roller width 3.7 Inch Package Includes  1 x ab wheel  1 x knee pad