Our endoflex multitaper system is comprised of three shaping (SX, S1 and S2) and three finishing (FL, F2 and F3) files. Our files promote smooth uniformly tapered canals, a lot easier to use than stainless steel hand files. During the use of any rotary files, it is necessary to consider their potential for breakage. In order to prevent breakage, our endoflex files have a unique design, including multiple tapers, a convex triangular cross-section, a continuously changing pitch and helical angle, and a modified guiding tip. Endoflex system are the best files system for root canal treatment.