Our Retro Style C7 Christmas Light Selection is sure to fit all your Nostalgic Lighting needs this Holiday Season. Our C7 Lights come in Retro Glass, Ceramic or in LED. We offer Clear & Multicolored C7 Light Strings, plus a large selection of Solid Colored C7 Lights in every shade of the rainbow. A C7 Bulb is 7/8 of an Inch in Diameter (22mm). These Retro Style Christmas Lights are perfect for any Residential or Commercial Christmas Display.