Attributes:* Die Thread Size: 5/16-18 UNC; * Die Outside Dia.: 25mm / 0.98"; * Die Thickness: 9mm / 0.35"; * Die Material: Alloy Tool Steel (9SrCi)* Stock Size: 25mm x 9mm / 0.98" x 0.35" (D*H); * Stock Fit Die Size: 16mm-25mm OD / M7-M8 ;* Stock Overall Length: 207mm / 8.15"; * Stock Handle Dia.: 7.8mm / 0.31"; * Stock Material: Cast IronWhat Is Included:* 1 Piece x Round Die, 1 Piece x Die Stock HandleApplications & Features:--- The die and die wrench set is widely used for repairing, cutting or creating threads on bolts, pipes, fittings, rods or bars, or other cylindrical objects. Suitable for processing stainless steel, aluminum alloy, cast iron, copper, iron, aluminum, and plastic. It is an essential tool for anyone who needs to precisely cut threads on cylindrical objects.--- The 9SrCi alloy tool steel round die has high torque, good wear resistance and durability. Designed with a tapered locking hole, the die locks firmly and does not loosen when cutting external threads. Used with the die handle to apply pressure and rotate the die around the component to produce the desired threads.--- The die wrench are made of strong and durable cast iron to withstand high levels of stress and torque, and offer corrosion resistance, stability and precision. The die stock is easy to grip and handle, and has a comfortable shape for greater control and accuracy during threading.Useful Tips:--- Use a lubricant (such as oil or coolant), apply steady pressure, and turn the die slowly and steadily. It is important to reverse the die periodically to break up chips and prevent clogging. Choose the appropriate size of die and die stock wrench based on the diameter of the object you need to thread.