The Truck-Lite 26 Series 2.75" x 1.5" Round 1-Incandescent License Light is the perfect choice for license instrument or step lighting. This light features a cadmium plated steel housing that is extra durable and a screw lock cover with an easy-to-use cam system for changing bulbs. It is designed to surface mount and grounds through a screw with a 1/4" screw hole diameter. This light is powered by a single incandescent bulb and is sure to provide reliable and long-lasting performance. FleetPride is your First Click in Heavy Duty®.