Feature: 1. 5 in 1 Multifunctional Design: Surface roughness of the drill bit changes from top to bottom, and a nail bit of one size can perform functions of multiple sizes. 2. Practical: Drill bit can quickly remove, clean, shape and cut acrylic or hard gel to meet your various needs. 3. Bilateral Rotation: 5 in 1 drill bit can be rotated to the right or left to achieve cutting in clockwise and counterclockwise directions. It is very suitable for left and right hands. 4. High Strength: Made of hard tungsten steel, reliable strength, high durability, low cutting performance, less dust, can quickly and well reshape, polish, engrave and gel nails or acrylic nails . 5. 5 Sizes of Nail Drill Bits: Including XF, F, M, C, XC, these sharpening heads are suitable for most nail machines with drill bits, and suitable for most gel nails and experienced manicurists or beginners in nail art. Specification: Item Type: Nail Drill Bits Material: Tungsten steel Product Model: XF, F, M, C, XC Product Handle Diameter: Approx. 2.35mm / 0.1in Characteristic: Used for manicure, nail removal, etc. to be used with nail polisher. Product Application: Household, nail salon, etc. Package List: 5 x Nail Drill Bit1 x Dust Brush 6 x Storage BoxHigh strength: made of hard tungsten steel, reliable strength, high durability, low cutting performance, less dust, can quickly and well reshape, polish, engrave and gel nails or acrylic nails . Bilateral Rotation: 5 in 1 drill bit can be rotated to the right or left to achieve cutting in clockwise and counterclockwise directions. It is very suitable for left and right hands. 5 sizes of nail drill bits: including XF, F, M, C, XC, these sharpening heads are suitable for most nail machines with drill bits, and suitable for most gel nails and experienced manicurists or beginners in nail art. Convenient and Practical: Acrylic or hard gel can be quickly removed for cleaning, shaping, cutting, smoothing and removal to meet your various needs. 5 in 1 Multifunctional Design: Surface roughness of the drill bit changes from top to bottom, and a nail bit of one size can perform functions of multiple sizes. 5 in 1 Multifunctional Design: Surface roughness of the drill bit changes from top to bottom, and a nail bit of one size can perform functions of multiple sizes.