General description The 2pcs T20 Lamp Holder 7440 Lamp Base Adapter is designed for versatile use in various vehicles including cars, bicycles, trucks, trailers, boats, and caravans. This pre-wired light socket allows for easy installation and is perfect for adding extra parking lights, side lights, license plate lights, interior lights, turn signals, and reverse bulbs. Technical specifications Compatible bulbs: T20, 7440, 7443 Voltage: DC 12V - 24V Cable length: 12cm Material: Rubber, heat resistant and durable Installation Pre-wired socket for easy installation No modification, cutting, or drilling required Usage This bulb holder can be used to extend the bulb or replace an old bulb holder, creating additional light output.