The BDSM Emblem is a design based on a Triskele.
The Triskele is the basic shape of the Emblem, with three “arms” curving out from the center and merging with an encompassing circle.
The Triskele is an ancient shape that has had many uses and many meanings in many cultures.
Those details are the black inner color, the silver-golden lines or in other words the rims and spokes are of a color indicating metal and last but not least what usually appears as dots over the internet are holes of identical color with the rims and spokes.