High Quality Bottle Brushes: 14 pcs bottle brushes are made of 304 stainless steel and durable nylon bristles. Includes a brush that can be used to clean the bottle cap, which are not easy to fall. The cleaning brush has sturdy bristles, and the cleaning effect is excellent. The bristles of the pipe cleaner are strong enough to remove debris, soft enough to not scratch. Friendly Design: Unlike other cleaning brushes, we have three 8.27" small bottle brushes with dense bristles on the top for easy cleaning of the bottom of the water bottle without scratching the items. For the convenience of use, features a detachable key ring for easy access and storage. Effective Cleaning: The cleaning brush is perfect for blind angle cleaning. These small brushes for cleaning are specially designed for a multitude of home uses. Easy to get into hard-to-reach spaces, such as U-shaped, tiny straw and arc-shaped products. Can be used to clear kitchen sink plug hole of debris so that sink strainer fits better. Different Size: There are many size options for this cleaning brush. The smaller goes into very small grooves or holes. The bigger into bottles and glass. We provide a package of 13 nylon bottle cleaning brushes with different diameters to meet different place cleaning needs: 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm, 12mm, 16mm, 18mm, 20mm, 25mm and a cap cleaning brush. Overall length of brushes is 21 cm. Wide Application: The flexible brushes come with a detachable key ring for quick and easy access. With this key ring, you don't need to worry about losing them. This pipe brush is widely used in daily life. It can be used as airbrush, drip tip brush, colander brush, baby bottle brush, straw brush, coffee machine cleaning brush, kettle brush, pipe brush, etc.