The Blue-Point Metric Tap & Die Set, TDM-117, is a high-quality set of tools designed for creating and repairing metric threads. This set includes a variety of taps and dies in standard metric sizes, making it versatile for a range of automotive and industrial applications. The Blue Point brand is known for producing reliable and durable hand tools, ensuring that this set will meet the standards of professionals in the automotive and manufacturing industries. My Father in Laws Collection - he worked on motorcycles. Looks barely used with some rusting on the 12 mm that I cleaned off best I could.