[Luggage Replacement Wheel]: Round 4 hole design, the wheels perfect fit most of luggage, trolley case, with a light weight, heat insulation, thermal insulation, moistureproof, flame retardant, convenient use, etc. High quality trolley case luggage leather luggage mute damping wheels. [Easy to Install]: Left and right luggage wheels, Small W041 luggage wheel, please confirm the shape of the wheel and the mounting hole distance before buying. Easy to install without complex fix tool. [Wheel Hole Distance]: Measure your luggage 4 screws holes, you can know if this pair wheels fits. The wheel's 4 hole distances are 31mm, 45mm, 40mm and 33mm(Pls check size picture). [DIY Wheel]: It is a DIY product. You need to use the hole in the box to make the hole bigger to match the hole on the wheel when you install it. [Warm Notice]: The wheels do not fit all suitcase, please check the type and size before ordering. if you choose the right type, but the wheels's hole distance may be not completely same, you need to drill hole on you suitcase then assembly them. You can also contact us to choose wheel type in order to save your time.