Tired of your battery door falling off? Me too. This bracket is attached to the chassis using the grasshopper transmission extension notch for placement and then two screws holding it secure. Please make sure you clean/drill the clip holes to make sure all 3D printing material is cleared out. The pegs do not bottom out. The door will no longer fit and a 2D template for creating a styrene one is below. Make sure you select "Print it anyway" from the check out screen line item if prompted.