This is the Blue Brake Cam for the Traxxas T-Maxx 4WD RTR Monster Truck. This brake cam is installed in the gearbox, works in conjunction with the throttle linkage and compresses the brake shoes when the throttle is released. FEATURES: Replaces missing or damaged brake cams Brake cam is blue aluminum Cam lever and grub screw are steel INCLUDES: One blue aluminum brake cam One cam lever One 3mm grub screw REQUIRES: Installing in gearbox and attaching brake linkage. COMMENTS: Manufacturer's website is www.traxxas.com JXS 11/30/00 ir/jl BOX DIMENSIONS: 3.25" W. X .13" H. X 4.75" L. BOX WEIGHT: .02 LBS.