Feature:* Dimension-Fit for Round Die Size: M7-M9; M10-M11; M12-M16, matched hole size: 25mm 30mm 38mm Dia.* Material-made of zinc alloy, carbon steel, chrome plated finish, high hardness, good toughness.* Round die wrench-for making new threads, removing extra material, or when the thread is so badly damaged.* Easy to use--the adjustable die holder has regular handles for easy gripping and control.* Advantage--the hardware is in the process of creating uniform threads on different types of screws, bolts and pipes, essentially is a frame that helps to keep the cutting tools aligned, thus ensuring that the threads are evenly spaced and are cut to the required specifications.* The adjustable die holder has regular handles that make it easy to grip and control.* The heavy-duty design of the screw set is best suited for applications that require efficient and clean cutting of external threads.* The holders have a heavy-duty construction with a set of screws, that keep the matrix firmly in place. Specification:Material: Zinc alloy, carbon steel Surface treatment: chrome plated Fit for round die size: M7-M9; M10-M11; M12-M16 (Options) Fit Hole Size: 25mm 30mm 38mm Dia (Options) Quantity: 1pcsPackage Contents: 1 x Round Handle WrenchNote: The light and different displays may cause the colorThe item in the picture is a little different from the real thing. ,The measurement error is +/- 1cm.