The McCormick 377690X1 is a genuine OEM ring designed for use in McCormick agricultural machinery. This precision-engineered component features an inner diameter of 45 mm, an outer diameter of 52 mm, and a thickness of 2.5 mm, ensuring a precise fit and reliable performance in various tractor applications. Manufactured to McCormick's stringent quality standards, this ring is crucial for maintaining the integrity and functionality of the system it supports.