The brush set has 10 pieces nylon tube brushes, different diameters from 1/16 in to 1 in, you can always find a fit tool when cleaning gaps, dead angle places. Easy to get into hard-to-reach spaces, and no more remaining dust in your life.^ The brushes come with a detachable key ring and appropriate hardness. Dont worry about scratch your items when cleaning any more, such as glasses, jewelry, cell phones, etc^ Each end of the brush has conservatory design. Not only prevent scratching the items, but also protect you from hurting yourself when cleaning^ Made of stainless steel and nylon bristles, safe to wash dishes and drink straws. Well-made nylon bristles is also not easy to pluck^ Package included 10 brushes comes with a detachable key ring for quick and easy access. All brushes are 8 inches long. Size from 2 mm to 24 mm (1/16 in to 1 in). Perfect for hard-to-reach spaces cleaing, such as Airbrushes, small Bottles, Cell Phones, Colanders, Drinking Straws, Drip Tips, Espresso Machines, Eye Glasses, etc ^