TOUCH Diamond Ball Nail Drill Bit Blue 4.0 mm (D040D-M) Overview TOUCH Diamond Ball Nail Drill Bit Blue 4.0 mm (D040D-M) is a professional diamond-coated e-file bit designed for precise cuticle work, nail plate refinement, and skin cleaning during manicure procedures. The spherical shape ensures controlled, safe contact with the nail fold area, while the blue grit provides medium abrasiveness for effective yet gentle material removal. Key Benefits Medium blue grit for balanced abrasion and control 4.0 mm ball shape for efficient cuticle and sidewall work Diamond coating for durability and long service life Ideal for cleaning pterygium and dead skin removal Smooth operation with minimal vibration when used correctly Suitable for professional manicure and pedicure procedures Product Specifications Model: D040D-M Material: diamond-coated steel Shape: ball Diameter: 4.0 mm Grit: blue (medium) Use: cuticle work, nail plate cleaning, sidewall refinement Compatibility: standard 3/32" e-file systems Rotation: forward and reverse compatible Recommended speed: low to medium RPM for safe control Sterilization: compatible with professional disinfectants and ultrasonic cleaning Applications Lifting and removing non-living tissue around cuticle area Cleaning nail plate before coating application Refining sidewalls and proximal nail fold Preparing nail surface for base coat application FAQ Can this bit be used on artificial nails?It is primarily designed for natural nail and cuticle work, not for bulk artificial material removal. Is it safe for beginners?Yes, when used at low speed with proper technique and control. What does the blue grit mean?Blue indicates medium abrasiveness, suitable for controlled cuticle and skin work. Use only for training on tips.
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