The Performance Tool 40-Piece Metric Tap and Die Set is a versatile threading and rethreading tool kit that includes coarse and fine threads, covering NC, NF, and NPT sizes. It is an essential addition to any toolbox or workshop for a variety of projects. The blow-molded plastic storage case with designated slots for each piece of the set provides convenient storage, keeping the tools organized and easily accessible. This complete set includes 17 taps and 17 dies, tap wrench, T-handle tap wrench, die stock, screwdriver, and screw pitch gauge, providing everything you need for precision threading and rethreading. The set includes die sizes ranging from 1/8-inch PT to M12 x 1.75, ensuring you have the necessary sizes for a wide range of applications. Made with high-quality materials, this set is durable and reliable, making it an excellent investment for any DIY enthusiast or professional.