This product is made of high-quality solid 304 stainless steel, which is carefully crafted through the one-piece molding process, making it sturdy and durable. The unique stone washing process gives it a unique texture and beauty. A wide range of styles are also available to choose from, some of which give it the practical function of a bottle opener. This compact and exquisite self-defense tool is not only easy to carry, but also has multiple practical functions, making it an ideal choice for you to own.