Wiseman Threading Tools Hand Tap - Second Lead Tap - +0.015 Tolerance - M24x3Wiseman Threading Tools Hand Tap Second Lead Tap, +0. 015 Tolerance, M24x3 Precision hand taps are built to deliver consistent, flawlessly threaded holes when youre working with metal. The Wiseman hand tap is engineered for reliable internal threading by hand, giving you repeatable results from the first cut to the final clearance. Second lead geometry enhances cutting action and chip evacuation, reducing effort and the chance of binding. This means