Features 1.VERSATILE NPT THREADING: NPT pipe tap set offers multiple sizes to meet various pipe threading needs. It includes 5 sizes: 3/4in, 1/2in, 3/8in, 1/4in, and 1/8in. The nominal size of the faucet is the size of the pipe fitting to be tapped. 2.CARBON STEEL CONSTRUCTION: This sturdy pipe tap set is made of quality carbon steel, designed to clean and efficiently cut internal threads. It's an ideal choice for cleaning or rethreading clogged or damaged pipes. 3.PRECISE THREADING: NPT taps feature precise ground teeth with a right hand cutting type, square end, and 4 straight slots. These qualities ensure the accuracy and efficiency of pipe threading. 4.SECURE CONNECTIONS: NPT thread design of this pipe tap set establishes secure connections between pipes or fittings. This makes them reliable for plumbing, automotive, and construction applications. 5.ORGANIZED AND PROTECTED: For convenience, the 5 piece NPT pipe taps are neatly organized in a durable plastic case. This not only protects them from rust but also keeps them well organized and easily accessible when you need threading tools. Specification Item Type: NPT Pipe Tap Set Material: Carbon steel Size: 3/4in, 1/2in, 3/8in, 1/4in, 1/8in Package List 5 x NPT Pipe Tap 1 x Storage Box