Outdoor lighting patio party tent string lights - pergola gazebo backyard decor novelty lights, Inc. manufactures these durable and heavy-duty commercial grade light sets which come with 330 candelabra base sockets spaced 12" apart on black 16 gauge SPT-2 wire. This listing is for the string alone and bulbs are sold separately. These strings are perfect for an outdoor patio, special event, restaurant, and Christmas lighting decoration. This string is a bulk 330' that can be custom cut or used for a max run of up to 250' on one plug. This string is great for permanent outdoor lighting applications and long runs up to 250'. Each string comes ready to plugin for your convenience. Each socket is made of PVC material to create a water-tight seal around the globe bulb for extra protection against weathering. 330 Sockets with 12" spacing - 330' long max wattage is 1250 watts, not a connectable end to end max run using our 5-watt bulbs - 250' max run using our 1 watt led bulbs - 330' Spt-2 16 gauge black wire 25-watt bulb max per socket PVC socket forms tight water-resistant seal UV resistant for outdoor use general mounting tips: Best to install the string without the bulbs in the socket to lessen breakage. A guidewire (aircraft wire) is recommended to reduce the stress of the string and provide a clean professional look. Use aircraft wire in accordance with a cable tie and a snap hook. Use a zip tie to attach the string wire to the aircraft wire. Screw in the bulbs squarely to make sure that no moisture can jeopardize the functionality of the string. Your satisfaction is our #1 priority and if you have any issue at all, please contact us and we would be happy to assist.