These diamond bits have a shape similar to the D-80 but with a longer head. Good for precise work, especially if you prefer longer bits for nail care. Extra Fine Yellow – Polishing Skin Treating pterygium on sensitive skin. Gently lifting non-adjacent cuticles. Fine Red – Sensitive Skin Treating pterygium. Gently lifting non-adjacent cuticles. Clearing out nail grooves. Cleaning up the periungual area. Medium Blue – Everyday Use Lifting non-adjacent cuticles. Clearing out nail grooves. Shaping and refining side rollers. Smoothing and shaping the free edge for rounded corners. Coarse Green – Heavy Duty Cleaning and shaping nail plates. Lifting and removing rough cuticles. Clearing nail grooves and treating thickened skin during pedicures. Smoothing thick toenails and working the free edge. Care InstructionsWash, sterilize, and dry bits thoroughly after every client. Soak in 70% alcohol or stronger to disinfect. Specs Max Speed: 25,000 RPM Shank: 3/32" Head Size: 2.5 x 10mm Shape: Half-Cone (Barrel Tapered) Material: Diamond head, stainless steel shank