The STL 104 Series 4-in. round LED logo lightsfrom Optronics Internationalare a low-cost alternative to Optronics' original logo light. Each STL 105 Series light features 29 SMD LEDs configured for its round footprint, with 10 LEDs paired with optics for optimal light output, and 19 LEDs illuminating a fleet's logo during stop and turn functions. The stop/turn/tail light is FMVSS compliant for under 80" applications and may be used in over 80" applications when installed correctly. Features PL3 connection and grommet mounting, with other connection and mounting options available. Comes with lifetime LED warranty protection.