Precision engineered cutting geometry Ground threads with right cut (right-hand), a round shaft, a square head and four straight flutes deliver accurate, efficient cutting of NPT pipe threads. Produces consistent threads that reduce cross‑threads and rework, saving time on the job. NPT thread compatibility Designed for standard NPT (National Pipe Taper) connections to provide secure, leak‑resistant joints between pipes and fittings. Use with common piping systems where tapered pipe threads are required. Complete size range for broad coverage Set includes six NPT tap sizes: 1", 3/4", 1/2", 3/8", 1/4", and 1/8". Covers a wide variety of pipe wall thicknesses and typical plumbing, HVAC and instrumentation applications. Durable, job‑ready construction Sturdy construction supports repeated use and reliable performance in workshop or field conditions. Square head and round shaft provide secure mounting and torque transfer for hand or wrench operation. Organized, portable storage Robust storage case keeps all tap components organized for easy storage and transport between job sites. Protects tools from damage and simplifies inventory on site. Practical applications Residential plumbing: Use the appropriate NPT tap to repair or rethread water supply lines, bathroom fixtures and drain connections. HVAC maintenance and installation: Recut or restore tapered threads on refrigerant lines, fittings and gauge ports. Industrial or mechanical service: Maintain or rebuild pipe threads on instrumentation, compressed air systems and low- to medium‑pressure fluid lines. Why this set helps Reduces installation errors by producing consistent, properly tapered NPT threads. Saves time with a complete range of commonly used sizes in one organized kit. Built for field use with reliable construction and a protective storage case for mobility and longevity.