Black Oak Pro Series 3.0 Curved Double Row 30" LED Light Bar - Combo Optics - Black Housing [30CC-D5OS]Pro Series 3. 0 Curved Double Row 30" LED Light Bar Combo Optics Black Housing This 30 inch curved LED is a painfully bright LED bar that won't break the bank. This light is perfect for mounting in a lower bumper, behind the grill, or across the top of an ATV and can throw a beam that will illuminate a whole air strip. Don't underestimate its size. This 30'' curved double row light bar is no joke. Black Oak has taken the LED game to the next level.