... self-cleaning, transmission, compounding, pressure-forming, etc.made of high tool speed W6Mo5Cr4V2, or anti-corrosion steel 38CrMoAlA by special treatment. Assembled ... BUSHING , SENSOR HOUSING , LINKSOTHER WENGERP/C-10HEAD , SLEEVE , SCREW , SHEARLOCK High quality and Standard Twin Screw Extruder Screw Element