This cleaning brush is perfect for cleaning test tube, drinking , bottle etc. Simple design, easy and convenient to use. Also Suitable for cleaning the inner wall of test tube, which will bring much convenience to you.<br> <br> Features<br> -<br> - Material: , nylon<br> - Size L: 20.30X1.50X0.80cm/7.98X0.59X0.31in (diameter 1.1cm/0.43in)<br> - Size S: 19.30X1.30X0.50cm/7.58X0.51X0.20in (diameter 0.5cm/0.20in)<br> - Safe and convenient to use, not easy to break or deform, reusable and can be applied for longtime.<br> -The versatile design of the brush allows it to be used for cleaning various types of , , etc.<br> -This brush is very easy to carry and store, and ensuring that the brush remain clean for long.<br> -This brush is perfect for meeting long-term cleaning needs, can give you more convenience in daily.<br> -The soft and flexible brush head makes cleaning effortless, ensuring that hard-to-reach areas with ease.<br> Package list: 5 x brushes(Size L)<br> 5 x brushes(Size S)