Swivel casters are wheels that can rotate 360 degrees, allowing for easy maneuverability of objects like furniture and carts. They are commonly used in various applications, from office chairs to industrial equipment, enabling smooth movement in tight spaces. These casters typically consist of a wheel attached to a mounting plate or stem, which allows the wheel to pivot. Swivel casters can be made from different materials, such as rubber or plastic, to suit different surfaces and weight capacities, making them versatile for both indoor and outdoor use.