This is the Two Speed Spur Gear for the HPI Savage SS Truck. FEATURES: Black plastic construction 49 tooth spur gear Red rubber spacer INCLUDES: One black two speed spur gear One slipper pad HPIC7231 REQUIRES: Assembly on the Savage kits COMMENTS: This will fit only the HPI Savage trucks. dew 9-23-03 ir/jxs updated tjt 042004