DARK HARD ALLOY BURS are designed for removing coatings and filing natural nails, and these burs withstand all types of sterilization. This bur features double-cut technology, ensuring even sharpness across the entire surface from tip to base. INTENDED FOR: Removal of material that oozes out during curing under a lamp; Filing of natural nails; Filing of detachments; Thanks to the 'needle' shape, the bur is excellent for correcting acrylic and gel nails: filing under the nails, shaping and length corrections.