The 20" x 4" Fat Bike Wheel and Tire Assembly is a high-quality wheel set designed for BMX brand bicycles. Made of durable aluminum, these black wheels are equipped with a Dunlop valve for easy inflation. Perfect for sport enthusiasts looking for a reliable and sturdy wheel set to enhance their cycling experience. the wheel is used and has a little curb rash .but is a straight and functional wheel with a good 4 14" inch street tire