Brand new sterilized studs. 10 K solid gold, not plated. WILL NOT FALL OUT OF INSTRUMENT System 75 was designed as an easy-to-use, disposable cartridge ear piercing system to meet the demands of the professionals. System 75 offers the safest ear piercing available today. Every piercing stud, hoop and instrument meets or exceeds all US FDA and EC European standards and regulations. Additional Details ------------------------------ Product description: Brand new sterilized studs. 10 K solid gold, not plated. WILL NOT FALL OUT OF INSTRUMENT System 75 was designed as an easy-to-use, disposable cartridge ear piercing system to meet the demands of the professionals. System 75 offers the safest ear piercing available today. Every piercing stud, hoop and instrument meets or exceeds all US FDA and EC European standards and regulations.