Check the listing for details. Lighted Caster Wheels in 3", 4", 5" and 6" Size with 1" Hub and 5/16" Bearings. Condition: New. Listed at 49.95 USD. Lighted Caster Wheels For Wheelchairs available in 3"x1", 4"x1", 5"x1", 5"x1 1/4" and 6"x1 1/4". Number of total lights: 4 bright LED lights per side in green, red, blue, and white (8 lights per wheel). Lights can be seen at 360 degree angles. Lights are powered by a self generating system - NO BATTERIES EVER NEED IT! Bearings: 5/16" ID, ABEC 5 High Performance Bearings Pre-InstalledRim: ONE PIECE COMPOSITEHub Width: 1" HUB.PRICE IS FOR ONE PAIR (2).Compatibility: Fits most manual wheelchairs!Quickie Manual WheelchairsColor's WheelchairsTi-Lite (Only those chairs with 5/16" axle. Please measure your axle to make sure they will fit)And many others!California Proposition 65 Warning⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov