The search did not return specific information about the ingredients or materials of nail filer products. However, based on general knowledge, nail filers are typically made of materials such as metal, ABS, or glass. Some nail files also use adhesive tape. For electric nail drills, the ingredients are not applicable as they are electronic devices. If you need detailed information about a specific nail filer product, it's best to refer to the product packaging or the manufacturer's website for the most accurate details.