Cordset, Standard, Socketed Cord Set, E26 Sockets, Black Wire, 250 Feet, 24" Spacing Our commercial grade stringers are perfect for lighting Christmas tree lots, building exteriors, large trees or custom sculptures. Create custom string lengths that come with these 250 foot bulk reels. 14 gauge black wire. These E26 black sockets are spaced 24" apart for a total of approximately 125 sockets. UL listed for indoor and outdoor use.