uxcell Black Yellow Dual Wheel Design Fitness Exercise Roller w Knee Pad Product Name : Rolling AB Wheel;Wheel Color : Black, Yellow;Material : Metal, Plastic Each Wheel Size : ~17.5 x 2.5cm/ 6.9" x 1" (D*T);Metal Pole Size : ~23.4 x 2.2cm/ 9.2" x 0.9" (L*D) Knee Pad Size : 33.2 x 17.2cm/ 13.1" x 6.8" (L*W);Net Weight : 547.4g Package Contain : 2 x Rolling Wheel;1 x Metal Pole : 1 x Metal Pole 2 x Plastic Handle : 2 x Plastic Handle;1 x Knee Pad : 1 x Knee Pad