Easy to use, safe and not hurt hands. Premium material made, durable enough for a long time. Grinding bit is designed for the removal of gel and acrylic panels with high efficiency. Five grinding bits can be used interchangeably, can be positive and negative rotation. Suitable for grinding, polishing, unloading, exfoliating, engraving radian and so on. Type: Nail Grinding Bit Material: Plastic, Sandstone, Emery Features: Durable, Manicure Tool, Easy to Use Size: 5cm x 3cm x 3cm/1.97" x 1.18" x 1.18" (Approx.) Notes: Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 5 x Nail Grinding Bits