Novelty Lights C9/E17 Outdoor Globe String Lights &ndash; Outdoor Patio Party Pergola Garden Backyard Light Set &ndash; Heavy Duty Suspended Market Caf&eacute; Commercial Grade &ndash; Black Wire - 25 Feet Our heavy duty C9/E17 base string is 25' long with 25 sockets and our G50, S11, or C9 bulbs are sold separately. This string is heavy duty commercial grade which makes this perfect for any patio, restaurant, tent, pergola, or special event that requires ambient lighting. You can connect 4 Sets End-to-End With Our 7 watt G50 Clear or 1 watt LED G50 bulbs to make any install easy and convenient being able to have 100' on one plug! Pefect for installation situations that do not have an abundance of outlets and versatile enough to put in differnet places around your patio. Each socket is made of PVC plastic and suspended 3" down to provide a watertight seal around the bulb to ensure no defects due to weathering. This string is specifically made for commercial and residential outdoor/indoor use wherever there is need for decoration lighting. High quality 16 gauge wiring. Novelty Lights stands by their product 100% and will warranty all of our heavy duty commercial grade products for one full year because our customers satisfaction is our #1 priority. If you have any issues, please contact us and we will fix your issue. Trust the experts in Outdoor Patio Lighting! General Mounting Tips: Best to install the string without the bulbs in the socket to lessen breakage. A guide wire (aircraft wire) is recommended to reduce stress of the string and provide a clean professional look. Use the guide wire in accordance with an eye bolt and a snap hook. You can use a zip tie to connect the string wiring to the aircraft wire. Make sure and screw the light bulb in tightly so that no moisture can affect the socket.