I love these so much! This design started out as earrings but it fit so perfectly into my niche that I had to make them into nipple clamps! These are a stained glass window design on wood, so they are very very light. I think they are about two inches long or so. The clamps I use are adjustable, so if you don't like an extreme pinch, you can adjust it to whatever pressure you like. Since these are very lightweight, you could go with very little pressure and they would still stay on.
All my nipple clamps come with extra rubber tips in case you lose some.