FLEX ERA® 4 - 2-Light Master KitThe KC FLEX ERA 4 is your guiding light to thrilling adventures. This powerhouse is ready to light up the blindest corners and the darkest trails, and will turn daunting terrains into exhilarating challenges. This genre bending light retains the iconic features of its FLEX ERA brethren: High Performance Output, Versatility, Customization, Durability, and Distinctive Aesthetic Design. The biggest and most powerful light in the FLEX ERA Family, the FE4