Diamond Nail Drill Bits D-24, shape inverted cone, head size 2.5x5.5 mm Diamond Bits elevate nail care routine with precision and quality. Diamond Bits Inverted-Cone Shape are popular among nail technicians for their versatile applications. They come in three variations: Fine Bits for Sensitive Skin (Red): Designed for clients with sensitive skin, Excel treating pterygium, Safely opening sinuses, Skillfully treating the nail wall. Medium Bits for Versatile Use (Blue): Recommended for precise processing of side rollers, Shaping the free edge of the nail, Cleaning nail grooves, Allowing for smooth rounding of nail corners. Coarse Bits (Green): Perfect for cleaning and shaping nail plates, Treating hyperkeratosis in pedicures, Smoothing out the thick top of toenails, Processing the free edge of the natural nail. Specifications: Speed recommendation: Up to 25000 RPM. Shank diameter: 3/32” Head dimensions: 5.5x12mm Length: 45mm Grit: Fine, Medium, Coarse Shape: Inverted Cone Material head: Diamond Material shank: Stainless steel