Feature: 1. The beautiful base design at the rear is not easy to detach, which is safer and more convenient. 2. The back end and the top end of the polishing pen have dark lines to make it non-slip and easy to use. 3. The plug-in grinding head socket is easy to plug in and use, which makes replacing the grinding head more convenient. 4. This product is small and light, so you only need to put it in your purse or suitcase when you go out. 5. This professional polishing pen is very suitable for nail salons and home use. Specification: Condition: 100% brand new Item Type: Nail Drill Optional color: dark gray, pink Product material: aluminum alloy Power supply mode: USB interface Speed: 18000-20000 rpm Product features: Small and beautiful, nice size and appearance, more in line with the demeanor of a woman holding a polishing pencil Product usage: household, nail salon, etc. Size about. 13.2 x 1.6 cm/5.2 x 0.6 inches Package List: 1 x polishing stick 6 x metal grinding head 5 x quartz grinding head 16 x grinding circle 1 x Nail Art Soft Brush 1 x manual 1 x USB cable