We procue the telsmith crusher spare parts, which is delivered to North America Mining Plant. The Fixed Jaw plate, Moveable Jaw plate, Swing Jaw plate, Side plates, Cheek plates, Concave, Mantle and BowlLiners, these are made of High Magangese Steel Mn13Cr2, Mn22Cr2, Mn18Cr2. The wokring life will be longer 10-30% than original purchasing parts.