High qualityThese tube brushes are Nylon bristle and stainless steel lever, with good elasticity, lint-free, will not rust and are environmentally friendly and durable. Innovative designLift the bristles on the top of the brush. It can clean the bottom of the bottle more easily than other brushes.Small, soft cleaning brush for cleaning the smallest details. Removable KeychainThe brushes come with a removable keychain that allows quick and easy access. All brushes have a convenient loop at the end of the handle, can be hung up when not in use, not easy to lose. Application- The lever of the tube brush is flexible, can clean corners, can effectively remove stubborn dirt, soft handle, easy to use, and it will not hurt the inside of the instrument to remove any dirt. Suitable for milk bottles, spout of pot keyboard, test tubes, glass bottle and small nozzle, espresso machine, etc.