100% Satisfaction guaranteed: Any unsatisfied purchg experience regarding any problem. feel free to contact us by email. we will help you to solve your problems soon.If you receive the wrong size of the product, please contact us and we will take the initiative to exchange and refund. Safety: this product is intended to be used by a professional piercer only. Scope of use: belly button ring, eyebrow, tongue, tragus, rook, labret, daith, nipple. Package: each body piercing needle with individually packed and sealed pack, new and unused. Each needle is 100% sterilized using E.O gas. Material: 316L medical stainless steel, disposable surgical steel hollow piercing needles, very strong and durable.