This paragraph trolley case luggage leather luggage mute damping wheels, Wheels wear muted flexible, easy accessibility. Single load 60 kg, there is no off phenomenon,Quietness and flexibility are perfectly safe to use buyers. Material:Metal + rubber Bearing OD:19mm Colour:black Bearing ID:6mm Wheel diameter:40mm Wheels Thickness:18mm Axles lengh:35mm Features: wear, mute, load-bearing, double bearing, rotating flexible, Sliding effort, without effort, than the original luggage wheels are easy to use. Buyers need to measure the following data to know what size you are suitable with wheels measuring the original outer diameter wheels (wheel size). the inside of the measuring wheel groove width (width of the total installed width). through the length measuring wheel rivet screw screw (excluding nuts at both ends) measured through the wheel rivet screw diameter pipe thickness (ie bearing bore width) Package include:2 sets of Luggage Suitcase Replacement Wheels (2 Wheels, 2 Axles,2 Axles screws,4 bearings4 Washers, 2 Wrenches) Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.