The Hertel Extension Tap is a precision threading tool designed for creating #10-24 UNC threads with exceptional accuracy. Featuring 2 flutes and an H3 design, this high-speed steel tap delivers consistent performance in demanding applications. The spiral point design efficiently pushes chips forward, making it ideal for through holes. With a bright/uncoated finish for durability and a plug chamfer for optimal thread formation, this tap offers professional-grade results. The 4-inch overall length provides extended reach for deeper holes and confined spaces. Manufactured to meet 2B and 3B class of fit specifications, this extension tap ensures precise threading that meets industry standards. Perfect for maintenance professionals, machinists, and manufacturing operations requiring reliable threading tools.