Maglite Construction
 Most Maglite parts are made from anodized aluminum. There is a chrome-plated plastic reflector inside an aluminum housing at the top. Underneath the reflector is the light bulb or LED, which is attached to an aluminum tube. The batteries are inside the aluminum tube. There is no wire carrying the current to the bulb at the top of the flashlight - the aluminum tube is the conductor. On the smaller flashlights, the flashlight is turned on by slightly unscrewing the flashlight head.