“LED” represent the cutting edge of lighting technology, LED lights operate ona totally different concept than traditional incandescent or bulb style lights.Instead of using a brittle metal filament that is susceptible to road shock andvibration. LEDs are solid-state devices utilizing an electronic chip that isencapsulated in an epoxy substrate. This design provides increased durabilityand a protective seal from road elements like dirt moisture and other corrosiveagents. 2-1/2″ Clearance Stop & Turn Light For Auxiliary Use Only Sealed Moisture Proof Electronics Solid State Circuit Board Polycarbonate Lens & Housing LED’s: 3 Diameter: 2.5″ Depth: 0.8″ DOT/SAE: J592e Voltage: 12.8 VDC Amp Draw: 40ma Legal Heading: P2 Grommet Mounted Uses a 3 Wire Lead Connector Accessory Options Available: Chrome Plastic Grommet Cover: M50105 Stainless Steel Security Flange: M50103