1Premium Material: High speed steel taps are with high hardness and toughness for wear resistance, well suited for general purpose applications 2Application: Suitable for most metals, iron plate, copper, zinc, alloy steel, abrasive steel, A3 steel, stainless steel, etc.. Appropriate addition of coolant (e.g., water) can extend the service life when tapping 3Widely Use: Can make new threads or re thread damaged or jammed threads. Uncoated taps feature just the base substrate without any additional coatings, and fit a wide range of applications 4Convenient: Adjustable forward and reverse, ratchet rotation, lightweight, compact and convenient to use, save your time and energy 5Excellent Design: Standard metric thread design, clear and tidy, provide rapid chip removal for efficient threading, incisive and durable