1. Die Wrench: Fit Die Size: M27M36 (Metric) / 11/16'17/16' (UNC/UNF) / 65mm OD Die. Die Size: 65mm x 25mm. The die is made of alloy steel for strength and durability. Black oxide coating provides extra protection against rust and corrosion. 2. Wide applications: The die wrench can precisely cut, , or clean external threads on rods, bolts, screws, pipes, shafts, and other cylindrical objects, or simply remove screws and threaded rods (when used with round die cuts). 3. Features: The round die wrench is designed with 5 adjustable screws to secure the dies. It can hold round dies firmly and is easy to use. The ergonomic plastic handle ensures a secure and comfortable grip. 4. Easy to use: Align the positioning groove of the die (not included) with the mounting screws of the wrench, then insert the screws into the die groove and tighten them. Before starting tapping, apply cutting oil or lubricant to the workpiece and die for smoother, cleaner threads.