100m reel RGB 4-core 0.35mm² LED strip light cable

I install LED strips in sensory rooms and needed a good method of connecting several lengths together as they are seldom in the complete 5m length. This cable is a great way to keep track of the colours THOUGH the description is wrong, Black is connected to 12v positive and Red is connected to Red as it's used in RGB LED strips.

Thank you so much for an amazing product at such brilliant quality thank you.