Tapping

A Ratchet Tap Wrench is a hand tool used to hold and turn taps for cutting internal threads in holes. It features a ratchet mechanism that allows continuous rotation in one direction without removing the tool, making it ideal for working in confined spaces.

A Tap Set is a collection of hand tools used for cutting internal threads inside drilled holes. It typically includes different types of taps such as taper tap, second tap, and bottoming tap, used in sequence to create accurate threads. Tap sets are widely used in fitting, machining, and repair work.