The clamps themselves are metal, about 2 1/2″ to 3″ long. They are capped with black rubber and have a metal o-ring around them for adjustability. There are two strings of beads of varying sizes. Black ones interspersed with hot pink ones. The pink ones are pink on the inside, with a clear coating on the outside.
The clamps, even at the tightest setting are not horribly painful. I get a nice pinching feeling without discomfort. Though after several minutes I can see it becoming a slight discomfort. These are not as tight as clothespins or anything like that. Everything is smooth, there are no rough edges or anything to poke you, so they are quite safe. No worries of being scratched or anything like that.
However the black caps are easy to pull off, so be aware if one pulls off. Under the caps the metal comes to a flat end, so there are 2 points per each side of the clamp under the cap. You may be scratched if a cap comes off.
The strings themselves are a silverish, metal type of string. They can withstand a gentle tug, but if you are more of a masochist and want your nipple clamps tugged hard, this set is not for you. This is more of a decorative set, and indeed is quite photogenic! There may be other nipple clamps that are better suited for more BDSM style play.
The middle of the longest string boasts a pretty, larger black bead between a pair of silver beads. The beads on both strings are very tightly packed, so as it hangs you will not have to worry about them gathering at the bottom and having unsightly gaps near the tops of the strings.
There is no front or back, so it doesn’t matter if it gets flipped or anything, both sides look the same.
There are a couple o-rings between the clamps and the strands holding them there that would be easily replaceable should one break. But again, this is a more delicate sex toy and I would not tug with any force more than a light playfulness.