A very economical way to extend the life of your luggage when the wheels are damaged. The perfect solution without buying a new suitcase. Dimensions: 50 (outer diameter) x 18 (width) mm, inner diameter of the central bearing 6 mm, inner diameter of the bearing: 21 mm. Equipped with 32mm and 35mm shafts and washers to meet different needs. Material: rubber and metal. High quality rubber and more stable bearings, wear-resistant, the combination fits well in the trunk. Please carefully measure the diameter and width of the old wheel before ordering to select the correct size. The complete kit includes: 4 luggage wheels, 8 bearings, 8 screws, 2 wrenches, 8 spacers.