Now you can avoid touching public external surfaces such as public touch screens, elevator buttons, credit card machines with our contactless key tool. The reusable non-contact door opener is made with real brass not acrylic or aluminum that is not durable. The brass metal is a high-quality copper alloy. A study of hospital doorknobs shows that brass and copper impede bacterial growth, while aluminum and stainless steel let the bacteria run wild. In fact, within 15 minutes the copper had already partially disinfected itself known as the Oligodynamic effect. Solid brass keychain durable and sturdy, not easily broken. Designed to be lightweight, and easy to use. The hook groove is functional for various door handles shapes and sizes. Also use for ATM keypad, gas pump keypad, and other contactless payment with flat stylus tip. Our quality brass will not tarnish or corrode the copper alloy. Studies show brass is a copper alloy that is inherently antimicrobial. The bacteria's lifespan on copper is only 4 hours compared to other metals 3-4 days. Mini keychain tool is an ideal birthday gift, thank you gift idea, holiday gift, party favor, promotional gifts, and more gift ideas.