This installation accessories set is ONLY compatible with 10mm width 3-pin CCT COB LED Strip lights( to 8mm/5mm board width and RGB COB LED Strip Lights).The transparent middle connector not block the light.ONLY compatible with 10mm 3-pin CCT COB strip lights, other sizes are Using this CCT COB LED strip extension kit you can extend your strip light's length to the power supply or connector, eliminating the issue of limited space. These accessories let you extend and connect light strips, extend the connection between the strip light and controller/power supply, and let you achieve a corner connection 12 pcs of transparent gapless solderless connectors,12pcs of Dual End with 5.5in/14cm 22AWG wire,6 pcs strip to DC female plug connectors with 5.5in/14cm 22AWG extension wire(Transparent connection ends on each lead are removable and individually used as transparent gapless strip to wire connectors) this CCT COB connector kit lets you DIY for a safe and easy job that time and money.The advantage of the upgraded package is that it can be reset repeatedly and the installation is more convenient Stable connection for daily use.IMPORTANT NOTE:Before pressing the connection, please check whether the positive and Material: Metal+ABS Color as shown Package Contents: 3 set led strip connectors Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.