Caster wheels are small, wheeled devices that attach to the bottom of furniture or equipment, allowing for easy movement. They come in various sizes and materials, making them suitable for different surfaces and loads. Commonly found on items like office chairs, carts, and hospital beds, caster wheels enhance mobility and convenience. These wheels can be categorized into two main types: swivel and rigid. Swivel casters can rotate 360 degrees, providing greater maneuverability, while rigid casters move in a straight line. Choosing the right type of caster wheel depends on the specific needs of the item and the environment in which it will be used.