Specifications:2.35mm shank diameter suitable for most sanders.Smooth rotation without jitter or hotness.Light weight, high strength without slipping.The grinding head is made of tungsten steel, more stable to use and more powerful.Tungsten steel material can maintain its sharpness and cleanliness for a long time.Item Name: Nail Drill BitMaterial: AlloyFeatures: Nail Drill Bit, Durable, Manicure ToolUsage: Nail Drill, Manicures, Nail Polishing, Nail File, Nail Art Salon, Foot CareSize: 2.6cm x 0.235cm/1.02" x 0.09" (Approx.)Notes: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.Package Includes:1 x Nail Drill Bit