EASY TO USE: Open the wire clip. It should snap open with just a little effort.Insert your 10mm LED light strip inside the clip underneath the two contact prongs, making sure the side of the strip aligns with the + symbol.Close Snap the wire clip shut. Gently pull on the wire to confirm you've secured the strip inside the connector. If you need to solder it with light strip cable, you had better use less tin in order to avoid short circuit. Easy to Use:Compatible with 0.39inch / 10mm Wide SMD 5050 RGB Flexible LED Strips, Solderless couplers for 10mm waterproof RGB LED strips only Pins pierce the strip from behind to make a connection without compromising the silicone Suitable for standard density strips only . Quick Splitter Connection and A Solderless Quick Snap Down Solution.These are designed specifically for use with waterproof strips that have a silicone coating. Pins of led strip:4 pin Led strip Working temperature: 0~40 Celsius Storage temperature: -20~60 Celsius Installation Instructions: 1.Open the clip on the side 2.Slid the 10mm LED light strip inside the clip underneath the two contact prongs 3.Make sure the side of the strip aligns with the "+ -" polarity 4.Close the wire clip Colour:White Material:plastic Size:10mm Package Contents: 150 x Connectors