"Battery pack head" for lighted control knobs. Fits Weber Genesis II "LX" models, 2017 and newer. Measures 2-3/4" X 2-3/4". Features 4 male flat spade terminals, 2 for the lights connections and 2 for the momentary switch. This part pairs with a "battery pack housing", Weber Part 70880, sold separately. Mounting hardware (3 screws) and installation instructions included. Genuine Weber Part.