The small ball-shaped diamond drill bit is used to remove, cleanand smooth periungual folds. The drill bits have a universal shank diameter of 2.35 mm and are therefore suitablefor ""twist and lock"" and podiatry nail drill machines. They can be disinfected in aqueoussolutions and sterilised in the autoclave. The colour of the stripe(s) on the shank indicatesthe grit or sharpness of the drill bit. PRODUCT FEATURES: . Shape: flooted ball •Use: for cuticles and nail sidewalls • Head diameter: 5 mm . Grit: fine • Recommended speed: 20 000 - 30 000 RPM* •For whom? Right- and left-handed users