Endodontic instrumentation system. Features the patented relieved helical flat, which revolves in the opposite direction of the cutting flutes to increase instrument flexibility and reduce engagement for fast and safe negotiation of the root canal. The helical flat, coupled with proprietary NiTi material, produces an instrument that reduces the risk of ledging, follows the canal anatomy, creates a coronal pathway for debris, and solves the feeling of ‘‘pulled-in’’ instrumentation. Combine SafeSiders HF instruments with the Endo-CSV^® Cordless Endo Motor for thorough endodontic instrumentation use.