Plex V Rotary File - 25 mm Length, .04 Taper, 0.45 mm Diameter - Blister/4High performance rotary file designed for precision shaping and finishing. Features a 25mm working length, . 04 taper, and 45mm diameter for efficient, consistent results. Pack of 4 in a convenient blister pack Key Features Controlled Memory (CM) Wire Technology: Manufactured with an exclusive thermal process, these martensitic NiTi files are extremely flexible and can be pre curved to navigate challenging anatomy without memory induced straightening.