KnKut 10-24 Fractional HSS Hand Tap KnKut 10-24 Fractional HSS Hand TapKnKut Performance Hand Taps are made of Hi-Tungsten and Hi-Molybdenum tool steel. They are surface treated for maximum lubricity and have precision ground threads for the best in accuracy and performance. .Made In USAClean and Chase ThreadsClean, Accurate ThreadingHSS Hand TapCuts Stainless Steel and Titanium AlloyManufactured From High Speed Steel KK24-10-24