Features and Benefits: 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 ; 1 to 1-1/2 threads chamfered ; Used when threads must go to bottom of hole ; 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 ;