Color:12Pcs 4-Pin Strip to Strip Connectors Advantages of GE017 Series: -These NEWEST DESIGN of waterproof 10mm (SMD5050) RGB LED light strip to strip connectors are worry-free solution for waterproof 5050 RGB LED light strip connection. -Solderless for strip lights.No need to peel off waterproof coating gel.Saves 2/3 time on strips connection. Installation Guides: 1.Ensure your section of LED light strip is WATERPROOF SMD 5050 LED Strip and has 4 contacts (+, B, R, G).All the contacts are clean. 2.Peel off the 3M tape around the cutting line area on the back of the LED strip, then insert the LED light strip into clasp side, with the 4 contacts of the led strip sitting ON the 4 pins of the clasp - make sure to match the + side of the strip to the black wire; (Note: No need to peel off the silicone on the surface of led strip around soldering line area.)Close the clasp down with force. 3.Checking the connection is successful. Reminder:Fitting with 10mm wide waterproof RGB LED Strip Light.Please checking wire dimension before use. Tools Needed to connect: one combination plier.