The two drawings below are by the artist Kinky Pigment or Knky Pgmnt (as the signature has it). You can see more on their tumblr here.
I only discovered this work recently, but I’m glad I did. The style and focus is interesting. I hesitate to say realistic, because some of the other drawings are quite extreme or surreal, but it does capture some of the sense of real kinky play. There are quite a few images featuring clips and zippers. I personally love playing with these in scenes, but it’s relatively rare to see them in kinky artwork.