Product advantages: 1. Featured ceramic grinding head, durability ten times faster than high-speed tool 2 corrosion-resistant, heat-resistant, long-term to maintain its sharpness 3 small, circular design, easier to remove the dead skin near the nails 4. Made of ceramic and stainless steel, not rusty Different models show the corresponding use: Red (F fine grain): thin stripes, used to remove the bulge on the natural nails and skin stains. Blue (M in the grinding): stripes in the middle, used to polish the edge of the nail and inside, making it more smooth and flat. Green (C Coarse Grinding): Coarse streaks for large areas of nail service, unloading faster. Based on the three basic FMG grinding patterns, the following two types have been developed: XF ultra-fine ( yellow), XC ultra-coarse (black) Item specifics:Item type: Electric Manicure Drill & AccessorySize: 1pcsMaterial: CeramicModel number: Nail drill bitPlugs type: EU