This mounting kit is only suitable for 12mm 3-pin COB lights (not compatible for 3mm/5mm/8mm/10mm and other COB lights). You can and quickly connect your COB lights using these connectors. No need to solder means you no have to worry about soldering problems, perfectly avoiding problems when soldering Easy to install, this connector kit makes DIY safe and easy, saving you time and money. Stable connection, durable. Important Note: The white wire on the connector corresponds to the negative (GND) wire on the strip, and the red wire corresponds to the positive (+DC24V) wire on the strip. Yellow corresponds to the signal line (DO/DI/DAT) on the light strip. The yellow signal wire does not need to be wired to power when you inject voltage into the strip. If installed incorrectly, the strip will not light properly or will only display white Contains 4pcs transparent gapless connectors, 4pcs transparent strip to wire connectors, 3pcs strip to connectors (with 3 Pin 20cm 20AWG Wires), 3pcs dual-end extension connectors (with 3 pin 20cm 20AWG wire), 3pcs strip to male plug connectors. meet your connection needs Material: plastic colour: As shown Package Contents: 4 x transparent gapless connectors 4 x transparent strip-to-wire connectors 3 x strip-to- connectors (with 3-pin 20cm 20AWG wires) 3 x double-ended extension connectors (with 3-pin 20cm 20AWG wires) 3 x stripped to male plug connectorss 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.