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 -21" = 21"L X 2.75"T X 3"D / 9,800Lumens / 120W / Super Wide Spot Beam 33" = 33"L X 2.75"T X 3"D / 16,000Lumens / 150W / Super Wide Spot Beam 40" = 40"L X 2.75"T X 3"D / 19,000Lumens / 180W / Super Wide Spot Beam 46" = 46"L X 2.75"T X 3"D / 21,000Lumens / 210W / Super Wide Spot Beam (Perfect Fit for the Tacoma Prinsu Roof Rack)