The JCB 10904366 SHIM is a genuine OEM component designed for precise spacing and alignment in various JCB agricultural and construction machinery. This shim features a 20mm diameter and a 0.5mm thickness, ensuring accurate fitment and optimal performance. It is compatible with a wide range of JCB models including backhoe loaders, telehandlers, excavators, and wheel loaders, providing essential support for critical assemblies.