Features and Benefits: Ideal for routine maintenance, repair work and for rethreading where high accuracy and tolerance thread is not critical; Straight flutes are ground to provide rapid chip removal for efficient threading; Designed for hand threading work in a variety of materials; Taps produce a class 2B thread; Tap size etched on tool for easy identification; 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; 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;