How to Use： 【Thin Needle Bit】 Filling away residual cured gel or cuticles in hard to reach areas, cleanning sidewalls, under nails, backfills; 【Needle Bit】 Filling away residual cured gel or cuticles in hard to reach areas; 【Flame Bit】 Used to create a lip of dead cuticle in order to better remove dead skin; 【Nib Bit】 Removing nails, For Lifting the eponychium，delicate cuticle work; 【Safety Bit】 Doing surface work for backfill cutting, shorten, infill cuticle; 【Micro Ball Bit】 Safely removes dead skin, clean around cuticles and under the nails; 【Ball Bit】 Clean under the nails, sidewalls and prep for backfills; 【Flat-End Cylinder Bit】 In treating the surface and side grooves. Removes shine from the nail plate; 【Silicone Bit】 Polish nail surface to make nail smoother. 【Cleaning Brush】 Shine or clean nail surface and other drill bits Package Infomation: 【Item Name】 Nail Drill Bits Kits 【Diameter of Shank】 3/32 Inches (2.35mm) 【Material】 Tungsten Carbide 【Quantity】 14 pcs in 1 Box 【Box Size】 3 7/8 Inches x 2 5/8 Inches x 1/2 Inches (100mm x 65mm x 12mm) 【Features】 High Temperature Resistance, Corrosion resistance, Sharp and Durable