Gravel To Polysilicon Production Plant. Roll crusher jaw crushers are available in 8 different sizes bb 50, bb 100, bb 200, bb 300 and the xl models bb 250 xl, bb 400 xl, bb 500 xl and bb 600 xlhroughput and final fineness depend on the crusher type, selected gap width and breaking properties of the sample materialeed sizes range from 40 mm to 350 mm, depending on the model.