The Box of 6 SLI Rough Service Bulbs 75W is a specialty bulb designed for rough service conditions. Made in the USA, these bulbs feature a special film that enhances their durability and performance. With a wattage of 75W, these SLI bulbs are ideal for use in various lighting applications, providing reliable and efficient illumination. Perfect for home, garden, or commercial use, these bulbs offer quality and consistency in their lighting output.