I have always needed strong nipple stimulation/pressure to achieve maximum orgasmic satisfaction. Yes, nipple pinching does work, but I am hindered by simple logistics, when alone. My partner is so willing but he has anxiety about pinching or biting too hard.
Earlier, during masturbation, besides my fingers, I used tweezers-type clothes pins and basic nipple clamps from an adult store. No success. The clothes pins snapped off and the clamps were either too severe or they did not hold. On a whim, I purchased the Y-Style clamps and clit clamp from Spartacus.

They arrived packaged on a piece of cardboard with some of the chain and one clamp showing wrapped in plastic. The package had a pic of the piece as well as a bold imprint proclaiming they were nipple and clit clamps.

When I opened them, my initial reaction was that these guys are serious! I also noticed that the chain connecting the clit clamp can be unattached enabling nipple play alone. The chain is very shimmery and just about the right weight for additional stimulation. The clamps themselves are totally adjustable by a readily reachable thumbscrew.
I consider my nipples on the small side, but very perky when stimulated. A test was in order, so why not?
I played around with the adjustments and clamped them on my nipples. The clamps themselves are covered by a heavy nub that attaches to the nipples and the aureola area. I started out light and gradually tightened the setting.
They worked and held on! If the setting is too loose they will pop off but pressure was my goal.

Gentle pulling on the chain also adds delicious intensity and only needs one hand.

I never before used a clit clamp so I waited a week before I tried it. The adjustment for the clamp is the same and the chain for the clit clamp is attached to the chain from the nipple clamps. forming the Y. I approximated the thumbscrew adjustment for my clitoral hood but I was kinda flying blind.....as my wetness increased, manipulation of the clamp was a challenge to ascertain the right setting for me. Persistence worked and the end result was just so erotic! The shimmery dancing chain looked particularly hot when I got in the doggie position! The dangling chain just added to the pressure.

Overall, I found this set totally satisfying. I usually don't change the adjustments, but on occasion I have increased the pressure.

I have used a bullet vibe against the clit clamp and achieved orgasm which rarely is possible for me with a bullet vibe. Using a thrusting dildo along with the clit clamp is a challenge as the thumb screw can cause some discomfort and the clit clamp has a propensity to pop off.

I enjoy these clamps so much, as they basically stay put when adjusted. The tightness range is rather wide so I believe they should fit most.
I am very impatient with any toy or accessory that needs constant adjustments, as it takes me away from the moment and this set, 95% of the time, stays put.

My boyfriend tried them on his nipples and he was not impressed, but then he doesn't enjoy me playing with his nipples either. PIV sex was a mixed bag using the clit clamp, as it sometimes pops off but we are continuing to try. PIV sex with just the nipple clamps in place is awesome for me.

I see the clit clamp here, as a bonus. I totally enjoy the nipple clamps and the clit clamp is always an option.

This set looks great in the bedroom but I don't see it being worn under clothes with the thumbscrew gizmo.

Overall a great set for beginners to advanced uses interested in nipple play!

This set continues to provide what I want in nipple pleasure! The adjustments are a plus compared to one size clamps. The clit clamp I did enjoy, but I had my clitoral hood pierced (vertical), and the clit clamp just seems to be in the way.

I highly recommend this set for the range of adjustments that just makes nipple and clit clamps that much more useful and comfortable. I am surprised how often I use the nipple clamps during masturbation and sex.