Item Type: Nail Drill Bits Material: Ceramic 1VARIOUS FUNCTIONS: The rough surface of the drill allow quick removal of nail glue for cleaning, shaping, cutting, smoothing and removal to meet your various needs 2LEFT AND RIGHT DIRECTION: The drill can be rotated right or left for a smooth CW and CCW cut, perfect for left and right hands without having to change other dimension during work 3FOR WHOM: You will get different styles of nail drill bits that are suitable for most drill nail machines, suitable for most gel nails and for experienced manicurists or beginners in nail art 4FAST AND EFFICIENT: Ceramic nail drill bits have reliable strength, high durability, low cutting performance and less dust to reshape, polish, smooth, polish, carve and smooth gel nails quickly and well 540PCS IN TOTAL: The package contain a total of 40pcs nail ceramic grinding head, enough for you to replace and use, very convenient 40 x Nail Drill Bits 4 xHolder