Material types: high carbon steel for hand tapping applications and high speed steel for machine tapping where critical dimensions are required. Etched: tap size and recommended drill bit size are etched on each tool for easy identification. Point styles: taper, plug, and bottoming styles are available. All Hanson taps and dies are made in USA. Steel Machine Screw Tap Specs: Precision ground straight flutes provide rapid chip removal for efficient threading. Designed for hand threading work. Taps produce a class 2B thread. 3 to 5 threads chamfered. Most common chamfer. Ideal for all general-purpose threading. Ideal for tough threading work, routine maintenance, repair and for re-threading where high accuracy and tolerance thread is not critical