Bright Choice. AutoLoc lens offer maximum directional light output allowing you to turn the night into day. Each lens is machined polished and CNC assembled assuring no leakage. Available in several styles and sizes including built in indicators. Features AutoLöc's exclusive Omni-View technology to ensure maximum light output. Easy installation even for the ""weekend"" mechanic. Constructed of a lightweight plastic case with a glass lens. Includes removable rubber seal to prevent moisture build up and allow easy access when replacing H4 bulbs. Insist on the best, and insist on AutoLoc and you be glad you did.