Additional Details ------------------------------ Product description: Manufactured by Studex, a leader in the field of high quality, hypoallergenic fashion jewelry, all studs are made from nickel-safe material, medically tested and proven hypoallergenic. Earrings are also easily removed from the cartridge for wear in already-pierced ears. Perfect for every-day use! They come to you packaged in a sealed, sterilized blister package fresh from the Studex factory. Works with Universal style ear piercing gun for piercing - gun not included. Thicker 16 gauge posts with locking backs. Made in the USA. Color may vary slightly due to the color calibration of each individual monitor. The photo does not show actual size, please refer to description for size details.