Original KMIZ Nail Drill Bit [5‑Pack] - Diamond Ball, 5.0 mm, Fine Grit, 3/32" Shank - E‑File Bit for Cuticle Smoothing, Callus Treatment & Cracked Skin Refinement - model DSP 5.0-F

Diamond nail drill bit, model DFL 5.0-F. Ball shape with 5.0 mm diameter and fine grit. Designed for cuticle smoothing, callus treatment, and cracked skin refinement during e-file manicures and pedicures. The 5.0 mm spherical head provides wide, even contact for finishing and polishing work on both hands and feet. Distributes pressure across a curved surface, minimizing the risk of tissue damage in sensitive areas. Used as a final step after flame or drop bits have completed initial cuticle or callus preparation. Effective on the proximal fold, lateral walls, heel margins, and toe skin. Manufactured by KMIZ (est. 1931) on Swiss precision equipment. ISO certified. CE marked. Shank diameter: 2.35 mm (3/32"). Working part length: 4.8 mm. ISO: 856.104.001.048.050.

• 5‑Pack KMIZ Nail Drill Bit DFL 5.0-F — fine-grit diamond ball bits with a 5.0 mm spherical head, designed for cuticle smoothing, callus treatment, and cracked skin refinement during e-file manicures and pedicures. The large ball shape provides broad, rounded contact that distributes pressure evenly across curved and uneven surfaces, making it effective for finishing work after detail bits have completed initial preparation. Manufactured by KMIZ — a medical instrument factory established in 1931, producing on Swiss Rollomatic CNC equipment with ISO 9001 and ISO 13485 certification.
• The spherical geometry ensures that no single point of the bit bears concentrated pressure — contact is always spread across a curved surface, reducing the risk of gouging or over-thinning. Fine diamond abrasive smooths and refines without aggressive material removal, making it suitable for work directly adjacent to live tissue. The 5.0 mm diameter covers more area per rotation than smaller ball bits (3.0–3.5 mm), allowing faster treatment of broader zones like the proximal fold perimeter and lateral walls.
• In manicures, used as a finishing tool after flame-bit cuticle prep: smooths the eponychium edge, blends the transition between cleaned nail plate and surrounding skin, and polishes any remaining roughness along lateral folds. In pedicures, treats minor calluses around the nail bed, softens cracked skin on heels and toe margins, and refines hardened lateral folds. The 5.0 mm head size is well suited for adult hands and feet where smaller balls would require excessive passes.
• Standard 3/32" (2.35 mm) shank fits all professional electric nail file machines. Balanced construction ensures smooth, vibration-free rotation at low to medium RPMs. Compatible with both right- and left-handed handpieces. The compact 4.8 mm working part length keeps the bit maneuverable in tight zones despite the larger head diameter, maintaining visibility and control during finishing procedures.
• ISO 856.104.001.048.050. Head diameter: 5.0 mm. Working part length: 4.8 mm. Shank: 2.35 mm (3/32"). Diamond coating retains grit consistency through repeated autoclave sterilization cycles. Suitable for both dry and wet techniques. Designed for trained nail technicians and podiatrists. The bit should be selected individually for each client and fully sterilized between uses.