The Diamond Nail Drill Bits Rounded Cylinder, designed for safety, precision, and versatile application upgraded nail grooming experience. Available in two variations: Fine (Red) recommended for sensitive skin: For removing the gloss of natural nails and preparing for acrylic buildup. Effective in treating pterygium and gently removing adjacent cuticles. Safely polish nails' walls for a smooth finish. Medium (Blue) used for: For gently removing cuticles around the nail and side walls. For grinding the nail plate before applying artificial materials. Removes gloss from natural nails and prepares for acrylic buildup. Shapes the free edge of the nail with precision. Maintenance: Wash, clean, sterilize, and dry all bits used during the process. Utilize a solution with at least 70% alcohol for effective disinfection. Specifications: Speed Recommendation: Up to 25,000 RPM Shank Diameter: 3/32” Length: 45mm Head Dimensions: 1.8x8mm Bit Shape: Rounded Cylinder Material Head: Diamond Material Shank: Stainless steel