1、Various Roughness: The roughness of drill bits are varies from top to bottom, which can quickly remove nail glue for cleansing, shaping, cutting, and smoothing.2、Left Right Rotation: Nail drill bits can be rotated to the right or left to achieve grinding in both clockwise and counterclockwise directions, ideal for left and right hands.3、Multifunction: Nail grinding head can be used for manicure, nail shaping, nail polishing and peeling, suitable for remove nail polish, and remove dead skin.4、Package Included: With 10 different nail drill bits, fit most nail grinding machines, suitable for most gel nails and for experienced manicurists or nail beginners.5、Storage Box: Nail art drill bits set is made of stainless steel and ceramic material, firm and sturdy, with a box for easy storage, keep these nail drills well organized.