Item Type: Nail drill bit_x005F_x000D_Shape: Corn head_x005F_x000D_Material: Ceramic _x005F_x000D_Outer Diameter: Approx. 6mm / 0.24in_x005F_x000D_Shank Diameter: Approx. 2.35mm / 0.09in_x005F_x000D_Length: Approx. 48mm / 1.89in_x005F_x000D_Patten(optional):_x005F_x000D_1. Extra coarse grinding XC black box_x005F_x000D_2. Coarse grinding C green box_x005F_x000D_3. Medium grinding M blue box_x005F_x000D_4. Fine grinding F red box_x005F_x000D_5. Extra fine grinding XF yellow box 1Easy to use and light weight, is in small size, easy to store or carry. 2Nail drill bit rotating burr small hole cleaning head is perfect for all types of nail work from carving, polishing to polishing. 3The intersecting stripes of the drill bit can help you polish and reshape your nails. 4Made of ceramicmaterials in high quality, supports exquisite craftsmanship, light and practical. 5Corn head shape keeps with high attraction, entitled with practical adoptability.1 x Nail Drill Bit Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.