Agricultural Lights and LEDs by Custer. Work longer with long-lasting LEDs. Distributors, you can feel better knowing your customers are purchasing the best LED work lights, beacons, LED strobes and light bars. Custer is American owned and operated in the Midwest, so we know the challenges with today’s farmers. They work long hours, under stressful conditions, and ever-changing weather. We have the highest-quality LEDs at a fraction of the cost.