One of the most powerful and popular rounds, the 357 Magnum is quite the conversation piece. You can now have it personalized with your name or expression. This 357 Magnum Key chain or necklace is made from recycled brass, has no powder and has been drilled to accept a key chain or ball style necklace. Choose between key chain or necklace when checking out. You can also choose from a variety of font styles for your text and pick the classic brass finish or shiney chrome finish.