Specifications: Name: Diamond Disc Bit Type: Diamond Shape: Slightly Convex Disc Grit: Medium Size: 6 mm Working Part Size: 6 mm Shank Size: 3/32" Universal Shank Purpose: for rhinestone removal and edging This universal e-file bit is an essential tool for drilling or remove any nail enhancement or create perfect edge on reverse nail bed extension. -Easily remove rhinestones with this brand new drill bit! -Use to make perfect smile line on reverse technique With JOHENS® quality control seal. For professional use only. All e-file bits may cause harm if used not properly. All e-file bits on this website are quality professional tools that are designed to be used by trained manicurists. If you do not know how to use e-file bits then please seek professional training. We are not responsible for damage using these e-file bits by people performing e-file manicures. You purchase this e-file bit knowing and understanding the dangers involved in tools.