Black C9 Light Spool 12 Spacing SPT-1 1000ft Spool of E17 (intermediate) sockets. This is SPT-1 18 gauge wire. We also sell replacement sockets if needed. Cut to desired length and put matching gauge zip plug. Black C9 Light Spool 12 Spacing SPT-1 1000ft 18 Gauge wire can be to length for those custom jobs. Put a matching gauge Zip plug on the wire to make jobs super easy. Zip plugs come in white, black, green, and brown.