PACKAGE CONTENT - One pack includes: 1 piece ear piercing gun + 1 piece built-in earring + 1 piece disinfecting cotton pad. 8 packs in total. Please note: earring studs are either black or crystal white depending on production batches GREAT QUALITY - Crafted with high-quality, safe metal materials. Stud material is cubic zirconia and surgical steel. Will not cause infection after ear piercing. Individually packed and sterilized to meet standard requirements HOW TO USE - Disinfect the ear and earring stud with alcohol pad, mark the desired spot, hold the ear piercing tool and align it with the mark, press firmly until the needle seat detaches. Do not remove the earring immediately after piercing UNIQUE DESIGN - Manufactured by a professional medical device producer to help prevent cross-contamination and inflammation during ear piercing. Each unit features a self-destructing ear-piercing gun with a built-in earring stud WIDE APPLICATION - Suitable for professional and home use. Note: this is a self-destructing device