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