Rotary files featuring the unparalleled flexibility and strength of nickel-titanium. Shorter handles for easier access to posterior teeth. Radially landed flutes to help keep the file centered in the canal. Non-cutting tips to help avoid perforations and ledging. Varied pitch and sharpness along flutes to reduce the potential for threading. Groupings of common tip sizes and maximum cutting diameters allow continuity in apical preparation and resistance form.