1. Product Content: Each pack contains 1 ear piercing gun + 1 built - in stud. There are a total of 8 packs. Please note: Due to different production batches, the stud colors come in two options: black or crystal white. 2. High - Quality: It is made of high - quality and safe metals. The stud is made of cubic zirconia and medical steel, which will not cause wound infection after ear piercing. The products are individually packaged and disinfected according to standard requirements. 3. Usage Method: Disinfect the ears and studs with alcohol cotton pads. Make a mark on the ear. Hold the ear piercing tool and align it with the mark. Press the ear piercing tool firmly. After the needle base separates, remove the ear piercing device. Do not remove the stud immediately after ear piercing. 4. Unique Design: It is produced by a professional medical device manufacturer, which can avoid possible cross - infection and inflammation during ear piercing. Each set combines a self - destructing ear piercing gun with a built - in stud. 5. Wide Application: It is suitable for both professional piercing and home piercing. Note: This is a self - destructing "single - use" set. Please do not press it for trial or testing.