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. 8 to 10 threads chamfered for easy starting . Longest standard chamfer . Requires less tapping torque since they have more working teeth. Ideal for tough threading work, routine maintenance, repair and for re-threading where high accuracy and tolerance thread is not critical