The image shows a close-up of the rear wheel of a bicycle. The wheel is black and appears to be made of metal, with spokes radiating outwards from the center. The spokes are arranged in a radial pattern, and the hub of the wheel is visible in the background. In the center of the image, there is a black gear, which is attached to the wheel with a chain. The gear is slightly curved and has a small hole in the center, likely for the chain to be attached to. The background is blurred, but it seems to be a concrete surface. The image is taken from a slightly elevated angle, looking down on the wheel.