GREAT QUALITY - Crafted with high-quality and safe metal materials. Stud material is cubic zirconia and surgical steel. Designed for post-piercing care to help prevent irritation. HOW TO USE - Disinfect the ear and ear studs with an alcohol pad, mark the desired spot, hold the ear piercing tool and align it with the mark, press the tool firmly until the needle seat detaches, then remove the piercing tool. Do not remove the ear studs immediately after piercing. UNIQUE DESIGN - Manufactured by a professional medical device producer to help reduce the risk of cross-contamination and irritation during ear piercing. Each unit features a self-contained, single-use ear-piercing device with an integrated ear stud. WIDE APPLICATION - Suitable for both professional and home use. Note: This is a single-use, self-destructing kit. Do not attempt to test or reuse the device.