When extra-heavy lifts are needed during a project, our MAX-ER® is a cost-effective way to increase the 21000's base capacity - up to 907 t (1,000 USt). It eliminates the time and expense of transporting and setting up a larger crane. With its compact dimensions, the MAX-ER® also works well in tight quarters. Like all our MAX-ER®s, it requires minimal ground preparation and sets up quickly.