RT files have a unique "Original RecTangle" cross-section for greater flexibility and efficient cutting ability (stainless steel).
HyFlex EDM paper points are ideal for drying root canals which have been prepared with HyFlex EDM files. At the tip of the point the diameter corresponds to the ISO sizes, but then the conicity follows the one from the EDM files.
Removing root filling obstructions during root canal retreatments