Give your derby car realistic detailes with this Head and Tail Light accessory kit! This accessory kit contains a battery pack and four lights: two headlights and two tail lights! It has an easy-to-use On/Off light switch. Use these lights as actual head and tail lights or use them in a completely creative way! Wiring allows these lights the ability to position freely. Assembly is required using various tools. Weighs 0.5oz.