Our ST3301 Series 18.6 Inch 12 LED Light Bar was designed to offer a high volume of light in the mid-range, with excellent visibility on the road shoulders. Compared to bars like our ST4K & ST3K (which have a longer beam distance but slightly less brightness in comparison) our ST3301 forms a larger diameter spot which blends homogeneously with its wide beam. Perfectly suits the customer concerned about wildlife running out from the road shoulders or those who need a huge amount of brightness and coverage in the mid short and mid range. Ingress Protection IP68 (Backed by certificate of conformity),