Pair Horse Cart Heavy Duty Bike Wheels 24"x2.125", 5/8"Axle, 4 3/4"
List of bicycle parts - Wikipedia
Amazon.com : Bike Axle CYSKY Quick Release Skewer Front Rear Bicycle Axle Wheel Hub Fit for Road Bike, Mountain Bike, MTB, BMX (1 Pair) : Sports & Outdoors