These pincer style adjustable nipple clamps come with attached rope pieces. Adjust the tightness of the clamps by twisting the screw to the appropriate level. Each clamp comes with a rubber coating with nodules on the end for additional stimulation. For a harsher nipple experience, remove the rubber coating to compress your nipples directly with the metal of the clamp. Add nipple weights (sold separately) onto the attached ropes for further nipple sensations.