Aurio Lighting LED C9 Light Bulbs, E17 Sockets, Blinker Blue, Commercial Grade Replacement Lamps, Christmas or Year Round, 25 Pack Bright C9-sized bulbs produce a festive atmosphere, during the holidays or all year round Reduce energy consumption by up to 90% compared to incandescent bulbs with a 30,000 hour rated life Illuminate the room with 3 bright LED lights in each bulb. The lights shine through a diamond shaped bulb cover creating a sparkling light. High quality components include shatter-resistant plastic and weatherproof seals all backed by a 3 year warranty. Bulbs are C9 size using an E17 socket. Please check your existing sockets or purchase one of Aurio Lightings C9 Stringers.