800151038 XCMG-KNL-02001 Outer Diameter 281.6 mm (11.09 inch) Inner Diameter 147.9 mm (5.82 inch) Length 510 mm (20.08 inch) 800151039 XCMG-KWL-02001 Outer Diameter 150.9 mm (5.94 inch) Inner Diameter 109.6 mm (4.31 inch) Length 496 mm (19.53 inch) Efficiency 99.9 Efficiency Test Std ISO 5011 Type Primary Style Radialseal Brand RadialSeal Media Type Cellulose