These nipple clamps are the real deal if you like serious nipple pain. They're made by Spartacus. The clamps are made of metal with plastic tips at the end. They look like this: .

As you can see, there's two clover shaped clamps with a chain in the middle. The chain is 16" long. The chain doesn't seem to be made of the sturdiest metal ever, but it's not going to snap on you right away either. The paint or metal is not flaking off any yet, although other reviews have warned about that. They can be washed with soap and water.

These clamps are really fun to clip on your nipples. My nipples are quite large so I can't fit them entirely into this sort of clamp. Instead I just clip the bottom part of the tip of my nipple in them. Someone with smaller nipples might enjoy these even more than I did, I just really like this toy because these clamps have a definite bite to them. They leave visible marks when removed and definitely aren't for novices to nipple torture. The tips have plastic coverings to protect your skin from the metal teeth of the clamp. This plastic seems kind of flimsy and I'm not sure how it will hold up over time. For now though, the plastic does what it is supposed to do.

These can be used solo or with a partner. If you pull on the chain, the clamps feel more intense. As you can see by the picture, they have a chain which could be fun for a partner to tug on, which would really zing. These clamps could also be used with rope or some other forms of bondage for some painful bondage if you were really feeling like trying something new. You might be able to wear these in public underneath clothes if you wanted to try some discreet public play. They are quite bulky though, so a thick shirt would be needed.

These clamps are still wonderful to use in the bedroom, both with a partner and solo. I've grown to love them even more with added use.