10 pieces cleaning tube brushes with different diameter from 1/16 to 1 inch. Perfect for hard to reach areas, such as Drinking Straw, Airbrush, Small Bottle, Cell Phone, Drip Tip, Colander, Eye Glass, Jewelry, etc Made from stainless steel and nylon bristles with 10 different diameter size including: Brush Diameters: 2, 3, 4, 5, 6, 8, 12, 16, 20, and 24 mm (1/16, 1/9, 1/6, 1/5, 1/4, 1/3, 1 / 2, 2/3, 3/4, and 1 in ). All brushes are 210 mm / 8 inches long Attached on a stainless key chain for a quick and easy access, keeps all these 10 brushes together, and it is easier to find the correct size when you are cleaning gaps, dead angle spaces Well made nylon bristle is not easy to pluck, safe to wash dishes and drink straw with soft bristle brush Each end of the brush has conservatory design. Not only prevent scratching the items, but also protect you from hurting yourself when cleaning