Why Choose Alink Cleaning Brush? ? 1/2 inch extra size brush head, perfect for fat straws and water bottle straws. ?7mm diameter cleaning brush can clean your beverage straws, coffee straws and other home daily straws. ? Made of 18-8 food grade 304 stainless steel ? BPA free and use easily ? Come with 1 durable gift plastic bag Alink Straw Cleaner is the handiest tool for reusable straw owners, making washing out straws a breeze. Made of high-quality, durable stainless steel with nylon bristles. Perfect for cleaning our stainless steel and glass straws. Rinses and cleans easily. Suitable for cleaning inside Glass Straws or any thing with a small opening, these straw cleaners work perfectly with our Classic and Smoothie Straws. We recommend thoroughly cleaning your new Straw Cleaners with soap and water before use. Particles rinse away easily with water, thanks to its simple design with well spaced bristles. Your Straw Cleaner should be dried well after each use and stored in a dry place.