Taps: Taps are used to cut internal threads, typically into pre-drilled holes. They come in various sizes and thread pitches to match the desired thread specifications. A tap set may include both taper and bottoming taps to facilitate thread cutting in different situations.

Dies: Dies are used for cutting external threads, usually on rods or bolts. Like taps, they come in various sizes and thread pitches to match the desired specifications. A die set may include both round dies and hexagonal dies for different applications.

Thread Wrench: A thread wrench or tap wrench is an essential tool for securely holding taps and dies during the cutting process. It provides leverage and control to ensure accurate thread cutting without damaging the tool or workpiece.

Coarse and Fine Threads: The set may include taps and dies for cutting both coarse and fine threads. This versatility allows for a wide range of threading applications, catering to different materials and preferences for thread pitch.

Storage Case: To keep all the components organized and protected, a durable storage case is often included with the set. This helps prevent loss or damage to individual pieces and makes the set portable and easy to store.