Package - Includes 10 pieces nylon tube brushes. The diameters for these cleaner are The total length is about 21cm, and the diameters are 2mm,3mm,4mm, 5mm,6mm, 8mm, 12mm, 16mm, 20mm and 24mm respectively., you can always find a right tool when cleaning hard-to-reach place. Material - Made of stainless steel and nylon bushes. Application - The multifunctional brushes are perfect for hard to reach space cleaning ,such as airbrushes, small bottles, keyboard, drip tips, machines, eye glasses, jewelry, drinking straws, cell phone etc. Convenient - Each set of 10 brushes comes with a keychain , it is convenient for you to keep them all together and make it easier for you to find a right size for the job. Design with a convenient loop at the end of the handle to hang when not in use or to reattach to the key ring for safe keeping. size: 27 x 10mm Material: nylon colour: black Package Contents: 10 x cleaning brushes with different sizes (total length of about 21cm, diameters of 2mm,3mm,4mm, 5mm,6mm, 8mm, 12mm, 16mm, 20mm and 24mm respectively) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.