A very economical way to extend the life of your luggage when a wheel is damaged. Perfect solution to avoid having to buy new luggage Material: Rubber and metal. Quality rubber and more stable rolling, wear, mute can work well with the suitcase Size: 50 (outer diameter) x 18 (wide) mm and the inner diameter of the center bearing is 6 mm, inner diameter of the bearing: 21 millimeters. With 32 mm and 35 mm axles and rounds to meet different needs Complete kit with: 4 luggage suitcase wheels, 8 axles, 8 axle screws, 2 wrenches, 8 spacers Please carefully measure the diameter and width of your old wheel to select the correct size before ordering