Light Bar - XPL - 21" - LED Selective Yellow Lens Utilizing a powerful 5 W CREE LED, the XPL series produces a powerful long-distance spot beam but with a much smaller and low-profile housing, Selective Yellow lens allows you to cut through dust, rain, snow, and fog to maintain maximum visibility, Iris Reflector Technology for superior light distance with an ultra-slim housing design, Back-lit halo function that is run independently on its own separate circuit, Multiple mounting options, Plug-and-Play harness with relays and rocker switch included