Add a festive touch to your Christmas decor with this lot of red and blue C9 and C9 1/4 ceramic replacement bulbs. These bulbs come in 4 packs of 4 and are perfect for creating a cozy atmosphere in your home or garden. The electrically powered lights features a candelabra shape and a voltage of 120v, making it suitable for indoor and outdoor use. The bulbs are made of glass and ceramic materials and come with a threaded mounting option. The red and blue color combination adds a fun and festive touch to any occasion, not just Christmas. These bulbs are ideal for holiday and tree-themed decorations and are sure to create a warm and inviting ambiance.