This is the Replacement EZ Start Control Box for the Traxxas EZ Start. This is the box that attaches to the 6-Cell battery and controls the start of the engine by pushbutton. FEATURES: Nylon Construction Black and Red in Color Has Pre-Wired harness for Glow Plug, Starter Motor, and Battery. INCLUDES: One EZ Start Control Box REQUIRES: EZ Start System JiM 7.30.02 ir/kh BOX DIMENSIONS: 5.25" W. X 1.25" H. X 6.50" L. BOX WEIGHT: .16 LBS.