Precision meets durability with the Hertel 7/8-9 UNC Tap Set. This professional-grade 3-piece set includes bottoming, plug, and taper taps crafted from high-quality high speed steel with a bright finish for optimal performance and visibility. Featuring 4 flutes for efficient chip evacuation and a 4-11/16" overall length, these taps deliver consistent threading in a variety of materials. Engineered to meet 2B and 3B class of fit specifications, this set provides the versatility needed for both general and precision threading applications. The Hertel tap set (Part #008939AS) is manufactured by MSC Industrial to exacting standards, making it an essential addition to any machinist's toolbox. Perfect for creating clean, accurate internal threads in manufacturing, maintenance, and repair operations.