With 16 cm diameter, the portion is huge! It is made of solid, thick, tough rubber. I put it between Rangierwagenheber (plate diameter about 7 cm) and reinforced Aufnahmepunkre the car and it verhidert reliably Any damage to the underbody by the sharp "claws" of the jack plate. That is much too large, never mind, because it adapts to fine without being baggy.