PERFECT DESIGNThis wheel adopts round 4 hole design, which is easy to install and take off. But the holes between suitcases and wheels maybe little different because of different production batch, if not match, you need to adjust the holes by digging the holes on the suitcase by yourself.< br >GOOD PERFORMANCEThis wheel is lightweight, heat insulation, thermal insulation, moistureproof, flame retardant, it is convenient to use.< br >FOR MOST SUITCASEThis wheel is made of high quality plastic material in black, which is durable and suitable for most suitcase.< br >DURABLE FOR TRAVEL SUITCASEWear resistant, suitable for the use of ordinary luggage box, and just need you have a ability in DIY.< br >WIDE APPLICATIONThis wheel set is suitable for bags, luggage, trolley case, trolley, etc. It is a great replacement for your suitcase. The product is divided into left and right, the base is marked with left and right, the assembly is not suitable and needs to be replaced