Box of 25 C9 Christmas Lights Steady Burn Red Bulbs. E-17 Interemediate base 7 watt bulbs. Price for bulbs only, wire sold separately. Classic transparent style bulbs that don't flash or twinkle. Larger C9 bulbs are perfect for lighting your home and more. Red lamps are an instant classic! Create vibrant displays or mix and match with other colors for a iconic glow.