features 17PCS: There are 7 pieces nail grinding bits in the package of different shapes, you can use them respectively to meet your different needs. 2ROUGHNESS ADJUSTMENT: The surface roughness of the drill bit changes from top to bottom, which can quickly remove the nail glue for cleaning, shaping, cutting, smoothing and removing to meet your various needs. 3CW CCW ROTATION: The drill bit can be rotated to the right or left to achieve smoothly cutting in clockwise and counterclockwise directions. Both the left and right hands are easy to use. 4WIDE COMPATIBILITY: These grinding bits are suitable for most nail machines, most gel nails and experienced manicurists or beginners. 5IDEAL REPLACEMENT: This professional nail grinding set is an ideal replacement for the old and damaged parts.SpecificationItem Type: Nail Drill BitsMaterial: Tungsten Steel, CeramicProduct Specification: 7 Pieces .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List7 x Nail Drill Bit1 x Storage Box