Includes Fine-F, Extra Fine -XF, Medium-M Nail Drill Bits Fits 3/32 Inches Shank Size| Color: Purple Multi-function 5-in-1 Drill Bit: The surface roughness of the acrylic nail drill changes from fine to thick from top to bottom. Can be used to clean, shape, cut, smooth, and remove Two-Way Rotation: These brocas para drill nails can be rotated to the right or left to achieve smooth cutting in clockwise and counterclockwise directions.Suitable for Both Left and Right-Handed Quality carbide material: The hardest material next to diamonds. Strength, good cutting performance, low heat generation, less dust, and long service life Easy to clean: The acrylic nail sets are corrosion resistant as well as no clogging for nails. You can easily clean the dust on the bits or nails with a nail brush, protect the bits after each use, and keep you and your client s nails healthy.