This set includes 11 polishing heads, which can be used with half the effort. When you hold our electric nail drill in your hand, you can feel the high quality weight and the enterprise principle of not cutting corners to design and make this product with your heart. Electric nail drill is necessary for manicure. Once you use our UMEINAC Electric nail drill, you will never want to replace any other manicure products, because compared with other brands, our machines are of high quality and cost effective.