Lighting TechnologiesLED 7-Inch Headlamp War Hots UpJanuary 7, 20141 minute read Over the course of automotive history, the 7-inch (180mm) round headlamp is undoubtedly the world’s most common headlamp format. To access this post, you must register DVN Lighting Gold Membership. Total 0 Shares Share 0 Tweet 0