All lights feature diamond-or facet-cut reflectors for a cool as ice look that dually improves illumination compared to standard sealed beams Diamond-cut ice lights have a smooth lens, available with or without skull design; Trillent and Pie-cut are tri-bar designs and 3K lights have three horizontal lines across the lens Bulb is included with each light Headlights are sold as each All are DOT approved Note: 7 lens units were designed and received DOT approval for use with a 60/55W H4 bulb. Using any higher-wattage bulb may cause serious problems and will void all warranties