Length of straw brush: 240 mm Brush diameter: 2 mm / 3 mm / 4 mm / 5 mm / 6 mm / 7 mm / 8 mm / 10 mm / 12 mm / 15 mm / 20mm / 25mm Handle Material: Stainless Steel Brush Material: Nylon Package Contents: 1 * 12pcs Straw Brush High Quality Bottle Brushes : The bottle brushes are made of stainless steel and durable food-grade nylon bristles, which are not easy to fall off. The cleaning brush has robust bristles and the cleaning effect is excellent. The bristles of the pipe cleaner are strong enough to remove dirt, soft enough not to scratch Different Sizes: There are many size options compatible with this cleaning brush. The smaller one goes into very small grooves or holes. The bigger one in bottles and glasses. We provide a pack of 12 nylon bottle cleaning brushes with different diameters to meet different cleaning needs. Key Ring Design: The flexible brushes come with a detachable key ring compatible with quick and easy access. With this key ring, you don't have to worry about losing them. All cleaning brushes have a handy loop at the end of the handle. The bottle cleaning brush can be hung neatly separately or together on the included split ring Wide range of use: These pipe cleaners are widely used in life, they can be used as cleaning brushes compatible with coffee machines, kettle brush, pipe brush, airbrushes, small bottles, mobile phones, colanders, drinking straws, glasses, etc. Effective cleaning: The cleaning brush is perfect compatible with cleaning blind spots. These small cleaning brushes are specially designed compatible with a variety of homes. Easy to get into hard-to-reach spaces, such as U-shaped and arc-shaped products. Used to clear the kitchen sink plug opening of debris so that the sink drain fits better. Different sizes that will be handy compatible with different jobs in the future.