This is the replacement alum Differential Case for the  HPI Savage X SS Kit - HPIC1861.  
FEATURES:
    Alluminum construction, silver in color  Replaces a worn or damaged diff case  
YOU WILL RECEIVE:
    One alum Diff Case  Four 8x1x2.5mm Steel Insterts  Four 4x10x.15mm Steel Washers  Four 10x12x.2mm Steel Washers  Two 6x19x.2mm Steel Washers  Four 3x15mm Flat Head Screws (phillips head)  One Assembly Instructions Sheet  
REQUIREMENTS:
    Installation following the model manual  kpm12/11/2006 ir/jxs &