This medium base white HID porcelain socket is for use with low pressure sodium lamps. It is rated for 600 watts and has 9-inch leads that are rated for 200 degrees Celsius and 600 volts. The socket can be snapped into its intended fixture for easy installation. PLT adheres to the strictest quality control and quality assurance procedures in the ballast and lamp industry. This PLT product is tested under the toughest conditions and is meticulously factory checked for defects in materials to reach you in perfect condition.