stainless steel, anti-rust, can ' t easily out of shape and will last of use A great tool kit for fixing your favorite sun glasses or other eye wear items Special concave hole is designed to hold the screws properly according to the shape of the screws for customer ' s easily and efficient It can serve as a handy tool for personal needs or a your loved ' s favorite glasses or watch repair needs Fix quickly and conveniently without the hassle of going to a repair shop, Manufacturer: HZBB