Our solderless connectors are very easy to use with our Flexible LED Strip. There is no need to solder connections together. Just slide the strip into the connector and use wire nuts or butt connectors to connect to the power supply. There are two types to choose from. If you are installing under cabinet lights then we suggest the connector with 5" wire. The wire is thin so you can drill a 1/8" hole and fish the wire through to connect to the next section of strip (or power supply).