This is a set of tongue rings, which are made of high-quality materials, durable and can be used safely. Non-allergic and smooth, comfortable to wear, easy to tighten and close. Special vibration design makes you feel something different and let you explore more unique look.Features-Material: Stainless steel.- High-quality materials and fine workmanship make these tongue rings durable and can be used safely.- Powered by button battery, these tongue rings are safe and convenient.- Non-allergic and smooth, comfortable to wear, easy to tighten and close.- Special vibration design makes you feel something different and let you explore more unique look.- Can be used as nipples rings, tongue rings and others. Suitable for parties or ceremonies to have fun with partner. Can also be given as a gift to your friends or family.