Novelty Lights blue C9 ceramic string light set with 25 bulbs is perfect for outdoor patios, decks, special event or Christmas lighting. Each set includes 25 long life C9 bulbs on a white wire stringer with 25 sockets that are spaced 12" apart. These durable vintage filament Blue ceramic c9 light strings have long lasting 3,000 hour bulbs and are on a 20 gauge SPT-1 white wire. All our c9 light strings use high quality materials that will stand up to all weathering. These C9 ceramic string light sets are great for putting on a roofline, decorating and indoor/outdoor tree, restaurant lighting, wedding events, and much more.