These 6D Optics Series Light Bars are the latest addition to off-road invention. The 6D Optics Led Light bars utilizes optical lenses instead of reflectors for a super controlled beam of light. Noise Cancelling Design so there is no wind noise, whistling, or buzzing like other light bars on the market. Also features a blacked out circuit board for a super Stealth appearance. All Bars Have a IP68 Rating with an added MilSpec Grade Breather to eliminate condensation OPTIONS: -Optional ARL (amber running light)...Built In-House by Spartan X Customs... -Optional Custom Built Wiring Harness built to Factory Specs 21" - 46" Sizes available ...