The product is a genuine Ducati rocker arm closer for specific models such as the 748, 851, 916, 996 S4, S4R, and ST4. Manufactured in Italy, this high-quality part is designed to provide reliable valve control for optimal engine performance. With the OEM part numbers 20910028A and 20910027A, this closure ensures compatibility and precision in maintaining the engine's valvetrain system. Ideal for motorcycle enthusiasts looking to replace or upgrade their rocker arm components, this Ducati part meets the highest standards of quality and craftsmanship.