The Claas 0011566590 is a genuine OEM internal retaining ring, also known as a circlip, designed for reliable component retention within Claas agricultural machinery. This precision-engineered ring features an outer diameter of 22 mm, an inner diameter of 19.5 mm, and a thickness of 1.2 mm, ensuring a secure fit and long-lasting performance. Weighing approximately 0.001 kg, it is a critical small part for various applications.