The JCB 80800265 Arm Bush is a genuine OEM replacement part designed for a wide range of JCB mini excavators, tracked excavators, and wheeled excavators. This high-quality bush ensures proper articulation and reduces wear in critical arm pivot points. With an inner diameter of 45mm, an outer diameter of 55mm, and a length of 50mm, it provides a precise fit for maintaining optimal machine performance and longevity.