1The cleaning brush is designed to clean the nails before and after the manicure, practical for use. 2It can be used to clean the dirt in the cracks of nail drill polishing head, convenient to use. 3Highdensity brush hair, does not fall off, durable for use. Important and necessary for nail drill. 4Handle diameter: 2.35mm, suitable for all nail drill pens on the market, easy to install and use. 5Multiple colors of brush are optional, you can choose according to preference. Suitable for home use and nail salon.