Wiseman Threading Tools Hand Tap - Bottom Lead Tap - +0.015 Tolerance - M20x2.5The Wiseman Threading Tools Hand Tap is built for precision with every turn, letting you cut clean, repeatable internal threads by hand. Designed for accuracy, these hand taps deliver a +0. 015 tolerance, so your threaded holes thread true and mate reliably with the corresponding screw or bolt. The M20x2. 5 specification tells you the exact diameter and pitch youll create, making this tool a dependable choice when dimensional control matters in your