Agricultural Machinery Driveshaft Isolator Replacement Part Number AM101286 Drive Shaft Isolator for John Deere 322 330 332 1445 1420 F912 F915. Features: Wide Compatibility, Sturdy Material, Simple Installation, Strict Quality Control, Advanced Manufacturing. Specification: Origin: Mainland China, Material: Metal + Rubber, Size: Diameter: about 9 cm / 3.54 inches, Inner Hole Diameter: about 48.8 mm / 1.92 inches, Small Hole Diameter: about 8.3 mm / 0.32 inches. Note: Due to different monitor settings and lighting conditions, the actual color of the item may vary slightly from the pictures. Please allow a 1-2 cm difference in measurements due to manual measuring.