Our Milwaukee® 1-7/16 in hex threading dies are precision machined for creating or repairing clean, accurate (external) threads. The hex dies feature long-lasting laser-etched sizing for the clearest markings and include a protective black oxide coating for corrosion resistance. The large 1-7/16 in hex shape is compatible with 1-7/16 in die stocks or for use with wrenches. Engineered for durability, our Milwaukee® 1-7/16 in hex dies are designed for cutting threads in the most common metal applications including brass, aluminum, mild steel, and more. For best results, use hex dies with cutting fluid. Milwaukee® 49-57-5391 Threading Die, 1-7/16 in Hex, 1/4 in - 18 NPT