With a total weight of less than 25 tons Rockster says its impact crusher R900 features a compact design and can be moved easily from one operation site to another. Despite its compact design, the model offers quality performance and can work in various applications ranging from asphalt, concrete and construction and demolition debris, up to hard virgin stone like granite or basalt, the company says. The R900 model can be optionally equipped with the Rockster screenbox RS83 and return belt for oversized grain.