The 4 Inch By 6 Inch LED Sealed Beam Conversion Lens is a practical and durable solution for upgrading your classic car's headlights. With 3 Watt CREE LEDs and 45 Watts per light, these conversion lenses provide a powerful and efficient lighting solution. Featuring a waterproof sealed design and factory H4 plug, they are easy to install with a plug and play setup. The high and low function beam replaces most H4666 headlamps, making them compatible with most 4 Inch by 6 Inch headlight housing. Upgrade your headlights with this reliable and versatile product.