The Link-Belt 210 X3 is a hydraulic excavator in the 21-ton class, designed for general earthmoving, utility work, site preparation, and material handling. It is part of Link-Belt's X3 series and is commonly configured with a diesel engine, hydraulic system, and crawler undercarriage for stable operation on varied terrain. The 210 X3 is used in construction, excavation, trenching, and loading applications. Typical features include a standard boom and arm arrangement, enclosed operator cab, and compatibility with multiple bucket and attachment options. Specifications may vary by configuration, year, and market.