Features 1、Designed for easy access to narrow holes and narrow areas, very suitable for removing burrs, rust, dust, removing oxide layers, and also suitable for cleaning and polishing small areas. 2、The brush is made of pure brass, which is durable and has a long service life. It can be used under the most demanding cleaning working conditions. 3、Handle diameter: 2.35mm, suitable for all nail drill pens on the market, easy to install and use. 4、Important and necessary tool for nail drill. Safe and wear‑resistant, stable and practical for use. 5、Light weight and in small size, easy to store and carry, suitable for home use and nail salon. Specification Condition: 100% Brand New Item Type: Nail Drill Bit Cleaning Brush Material: Brass Wire Head Size: Approx. 1 x 0.5cm / 0.4 x 0.2in Shank Diameter: Approx. 2.35mm / 0.1in Product Use: Cleaning residue, polishing, dust removal, oxide layer of metal grinding head. Package List 5 x Cleaning Brush