Introducing our 4 Pack of Heavy Duty Thick Shell, Industrial Waterproofed LED Marker Lights designed for use on your 24V truck and machinery. These marker lights are built to withstand tough conditions, featuring a metal back plate with 28 LED bulbs per unit for the side lights and 21 LED bulbs for the downlight. With a coloured LED and white LED downlight, these lights offer optimal visibility and illumination, ensuring your truck or machinery is visible in all conditions. These marker lights are suitable for use with 24 Volt systems only, and are super bright with low power draw and long-life. Upgrade your truck or machinery with our reliable and high-performance LED marker lights today. 24 Volt systems only - super bright with low power draw and long-life Metal back plate with 28 LED bulbs per unit for the side lights and 21 LED bulbs for the down light