This spring-loaded clamps are a good medium to advanced clamp style.  You pull apart the two bars from the outside, and adjust it to the size of the nipple, and let go.  They keep a steady, firm pressure around the nipple.  A clamp that is more bark than bite.  

These unisex nipple clamps blend pleasure, comfort, and style—perfect for couples seeking romantic moments or bedtime surprises.

Crafted from rust-resistant, fade-proof stainless steel, they’re lightweight, skin-friendly, and feature a highly polished, smooth surface for safe use.

With adjustable pressure, they offer gentle nipple stimulation, massage, and promote breast blood circulation, while being easy to clean and store. Designed as elegant fashion jewelry, the clamps have secure external threads for easy, harmless insertion and removal, suitable for daily wear or parties.