This is the optional Woven Graphite Upper Deck for Saddle Pack Batteries for the HPI Sprint 2 series.FEATURES: Woven graphite offers light weight and high rigidityINCLUDES: Woven Graphite Upper Deck Two Z526 M3x8mm Flat Head Screws, HPIC1326 Four Z568 Self Tapping Head Screws 3X12mm, HPIC0568 Instruction sheetREQUIRES: Slight chassis modification Needle nose pliers, DTXR0300 Side cutters, HCAR0627 Phillips screwdriver, TAMR7407 Small file, TAMR4046SPECS: Length: 6.8" (174mm) Width: 2.1" (54mm) Thickness: 0.08" (2mm)COMMENTS: Allows use of saddle pack batteries only. Once this upper deck is installed, stick battery packs cannot be used. jxs 3/24/06 ir/jxs