The Pittsburgh Metric 40pc Carbon Steel Tap and Die Set is a comprehensive tool set designed for creating threads in metric sizes. Made from durable carbon steel, this set includes a variety of taps and dies to suit different threading needs. The brand Pittsburgh is known for producing quality hand tools, making this set a reliable choice for professionals and DIY enthusiasts alike. Keep in mind that this set may be missing a few pieces, but it still offers a wide range of options for various projects.