The T3 Sylvania Double Ended Quartz FCL 500 Watts RSC Base 120V Bulbs are high-quality, halogen quartz light bulbs designed for industrial use. With a compact T3 design and double-ended construction, these bulbs provide a bright and efficient light output. Manufactured by SYLVANIA, a trusted brand known for reliable electrical equipment, these bulbs are ideal for a variety of applications requiring a 500-watt power output and RSC base compatibility. Made in China, these bulbs offer a durable and long-lasting lighting solution for businesses and industrial settings.