This product is a set of 8 boxes containing C9 transparent indoor/outdoor replacement bulbs for Christmas lights. These vintage bulbs have a green light color and are designed for electric power sources. With a large size and 32 units included, these incandescent bulbs are suitable for both indoor and outdoor use. The bulbs are manufactured by Wal-mart and come with a mechanical control switch for easy operation. Perfect for adding a festive touch to your Christmas decorations, these clear glass and metal bulbs are an original reproduction from Taiwan.