Product details:

Commercial grade C9 1000' bulk spool with 15 inch spacing and E17 candelabra sockets. The standard for most professional lighting installations, the socket spacing makes a perfect choice for both interior and exterior displays. The spool uses a commercial grade SPT-2 wire with the best C9 socket around that can be custom sized when you use our slip on male and female plugs (not included) to supply power to your lighting application. All of our incandescent and LED C9 bulbs (sold separately) screw into its E17 base socket. Don't forget the mounting clips and other accessories you'll need for quick and easy installation. Made for indoor/outdoor applications.