It consists of a long cup brush, a straw brush. A crevice brush, multi-functional, is a good helper for your home cleaning The long cup brush is the right size and can be used for a wide range of narrow-mouth bottles The crevice brush is cleverly designed to help you clean bottle caps that are normally very difficult to clean, crevices Ergonomic grip design, non-slip, easy to grip Cleaning brushes are used for many cleaning purposes including but not limited to pipe cleaning, test tube cleaning, baby bottle cleaning, straw cleaning, wine bottle cleaner, beer bottle cleaning, coffee cup cleaner, narrow mouth bottle cleaning