The NarrowStik w/ TriCore Lightheads are the most efficient emergency warning light made. It has 23 different flashing patterns and includes a NASLCH2 controller head. The added safety features allow it to be seen from a father distance than the competitors. The bar is available in 4 sizes: 30", 40.5", 47", and 2-24". Weather sealed for both interior and exterior use. Available with 5, 6, or 8 Amber lightheads. Meets J595, Class 1 and California Title 13 standards.