Features: brand new and high quality Adopt the highest precision standards diamond with superior strength, sharpness, and durability. You can be sure that the drill bit set for nails will last for a long for time. It is not just useful for drilling but also for polishing. You can easily use it for cleaning cuticles and acrylic, refining and shaping nail edges, and removing dead skin. Ensures that you can get the kind of finish in the nail Art which you want. Suitable for your nails as well as artificial nails, great tools for any professional manicurist or beginner. All the drill bits are smooth and don’for t heat up. Tungsten carbide material is not only antirust but also could protect from overheating damage with heat resistant. The mandrels rods of these replaceable grinding bits are made of solid metal materials, which are stable and easy to insert into the bit and maintain stability, and have heat dissipation and corrosion resistance properties, which can be used reliably for a long for time. These replaceable nail drill bits is not only useful for women and girls who like to do nail art and nail care at home, but also a necessary professional tool for nail salons, beauty shops, spas. Specifications: Material:Tungsten steel+Alloy Size: 1:Drill:Approx.0.45x0.83cm/0.18x0.33in Smooth Stick:Approx.3.17cm/1.25in 2:Drill:Approx.0.47x1.3cm/0.19x0.51in Smooth Stick:Approx.2.7cm/1.06 in 3:Drill:Approx.0.39x1.4cm/0.15x0.55in Smooth Stick:Approx.2.6cm/1.02in 4:Drill:Approx.0.63x0.55cm/0.25x0.22in Smooth Stick:Approx.3.59cm/1.41in 5:Drill:Approx.0.24x1.6cm/0.09x0.63in Smooth Stick:Approx.2.9cm/1.14in 6:Drill:Approx.0.65x1.4cm/0.26x0.55in Smooth Stick:Approx.2.6cm/1.02in 7:Drill:Approx.0.51x0.92cm/0.2x0.36in Smooth Stick:Approx.2.53cm/0.996 in 8:Drill:Approx.0.24x0.25cm/0.09x0.1in Smooth Stick:Approx.3.55cm/1.4in 9:Drill:Approx.0.24x1.3cm/0.09x0.51in Smooth Stick:Approx.2.48cm/0.98in 10:Drill:Approx.0.24x1.3cm/0.09x0.51in Smooth Stick:Approx.2.48cm/0.98in 11:Drill:Approx.0.6x1.5cm/0.24x0.59in Smooth Stick:Approx.2.6cm/1.02in Color:Golden Package Includes: 1 Piece Nail Drill Bits note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.