This is an original SDF Group part, number 04416796, a high-quality washer designed for various SAME, Deutz-Fahr, Lamborghini, and Hürlimann agricultural machines. It features an inner diameter of 10.5 mm, an outer diameter of 18 mm, and a thickness of 2 mm, ensuring proper fit and secure fastening in critical applications across a wide range of tractor models.