Single-use, sterile NiTi rotary files for glide path development: an important and indispensable step in the root canal preparation. Strongly indicated for use in difficult-to-access canals (narrow, highly mineralised, with strong curvatures) when hand files are not sufficient. Ease of use and simplified instrument management. Single instrument saves time across the complete endodontic treatment. Active file which removes part of the organic canal content. Smooth progression and excellent ability to negotiate curves, particularly in thin and curved canals. Resistance to instrument breakage and unwinding. Less risk of endodontic errors (creation of ledge, false canal, canal transportation). Infection risk control due to the sterile blister.