Plastic Paraboloid Media is a type of tumbling media used in mass finishing processes to deburr, polish, and clean surfaces of parts and components made of various materials, such as metals, plastics, ceramics, and composites. This is made of small, parabolic-shaped pellets that are typically made from polyester or polyurethane. Plastic Paraboloid Media is designed to be resilient and durable, yet gentle enough not to damage the surfaces of the parts being finished.