The Hertel Extension Tap is a precision threading tool designed for creating internal threads in pre-drilled holes. This specific model features a #10-24 UNC thread size with 2 flutes and an H3 spiral point design, making it ideal for through-hole applications where chips need to be pushed forward. Crafted from high-speed steel with a bright/uncoated finish, this tap offers excellent durability and cutting performance. The plug chamfer design provides a standard entry angle for general-purpose threading applications. With a generous 6" overall length, this extension tap allows for reaching deep holes or working in confined spaces. The tap meets 2B and 3B class of fit specifications, ensuring precise thread formation. Perfect for manufacturing, maintenance, and repair operations where consistent, high-quality threads are required.