These are the Bevel Gears (or inner, metal gear set for the differential) for the Duratrax Maximum ST. FEATURES: All Metal Gears YOU WILL RECEIVE: Two Bevel Gears (Key #3) (These have the output shafts attached) Two Bevel Gears (Key #4) One Bevel Gear Shaft (Key #5) COMMENTS: Other Related stock numbers: DTXC7450 Differential Gear Case (Key numbers 28,29,30) DTXC7400 Differential Gear Assembly (Key numbers 3,4,5,28,29,30) JXR 11/17/98 ir/jl &