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 bearing, wear, mute can work well with the suitcase Size: 50 (outer diameter) x 18 (wide) mm and the inner diameter of the central bearing is 6 mm, bearing inner diameter: 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 keys, 8 spacers Please carefully measure the diameter and width of your old wheel to select the right size before ordering