I bought 4 of these light sets to string along the ceiling of my back porch, because the were the cheapest bamboo style string lights I found. It turns out that these lights DO NOT connect to one another. They are single string lights for streaming one at a time. Do yourself a favor and go to Target and buy the string lights they have that connect to each other. For $15 you can get the same 10-light strings as these and attach up to 4 of them together (they also have 20-light lengths for $25 each, in which case you can buy less and save some money).