This top of the line 80mm x 24mm lighted wheel set replaces 80mm x24mm luggage wheels. All parts needed to replace wheels on luggage, including some Travelpro are included. Wheels are top quality lighted (light up) wheels designed to carry heavy loads if necessary and light up brightly even at slow speeds. Wheels come with ABEC5 bearings already installed. Set includes 2 wheels including bearings, 4 special spacers, 2 axles (34mm long), and 2 Allen wrenches. So let your luggage be visible day or night for safe traveling. Used extensively by flight attendants. Power is generated through a patented micro-generator and by the movement of the wheels, therefore no batteries are required. There are 4 colors of lights in each wheel which provide a kaleidoscope of color. To check 76mm wheel set with all red lights, search B00CXWMDSK, for all blue lights B00CXWRKO2, mix lights B00CXWI3OS and newly introduced all white lights B0140L47L2. Please measure your existing wheel diameter, width and axle length before ordering. Will not fit all luggage.