Outer casing of aircraft grade aluminium is antimagnetic and anodized against acid and corrosive damage with a knurled grip. Furnished with Lexan lens and reflector for maximum clarity, beam effectiveness and impact resistance. Adjustable beam control is the result of a cam action design that allows for a focused far reaching spot or a soft over-all flood, with less than a quarter turn of the head cap. The 2, 3 & 4-C & D-cell flashlights have a self cleaning switch that is an easy action soft rubber depressor, totally flush with the barrel for "snag free" convenience, and with an off/on and blink capability. O-ring sealed for maximum water resistance. D-cell models features a "small head" and have an extra bulb in end cap. All except the Mini Mag are serial numbered for identification. Each flashlight comes with two White StarĀ® Krypton gas lamps.