Stanley Proto J3716MT 16 by 18mm Proto Satin Flare-Nut Wrench, 12 Point,Stanley Proto,J3716MT" /> Satin finish provides corrosion resistance and a slip resistant grip Flare nut box ends incorporate the Torque Plus system 12 point flare nut box end allows for fine indexing, helping to improve speed and access Fits 4, 6 and 12 point fasteners