Sturdy Material Nail Drill Bits are made of tungsten steel and ceramic, featuring high strength, good cutting performance and low heat generation. It can quickly remove artificial nails without hurting natural nails. Suitable for Nail Drill Bit is an ideal tool for nail art. It can shape, polish, smooth and grind. It can reach tight areas such as the sidewalls and cuticles of the nail without scratching the nail. VersatileThe drill is versatile and ideal for polishing gel or acrylic nails, exfoliating and nail care, also suitable for carving or filing nails, glass, metal, ceramics, etc., sculpting and trimming them. SIZE DETAILS They are approximately 5cm/1.97 inches and 4cm/1.57 inches in length respectively, with fine, medium and coarse grits. Specifications: Color: silver, white Material: tungsten carbide, ceramic Nail drill bit length: about 5cm/1.97inch, 4cm/1.57inch. 4cm/1.57inch Storage Case Size: (L x W x H) approx. 9.8 x 6.4 x 1cm/3.86 x 2.52 x 0.39inch Nail Drill Bit Notes: 1.Due to the difference of light and screen, the color of the item may be slightly different. 2.Please allow 0.5-2cm difference due to manual measurement.