chakras and cockrings

I've been looking for a copyright free image of chakras that looks similar enough to the copyright image that I want to use in a publication that the artist won't respond to my request to use...#sigh... I found some free images, which lead me to the wikipedia commons page now, can someone explain to me the link between chakras and cock rings...Now, to my surprise, apparently chakras and cockrings have something in common...   https://commons.wikimedia.org/wiki/Category:Chakras