General description This Piece Thread Tap Set includes titanium-coated HSS metric thread drill bits ranging from M3 to M10, designed for high efficiency in drilling and tapping simultaneously. The set features a spiral flute design that enhances chip removal, making it ideal for creating threads, cutting, or forming concave parts of mating pairs. Technical specifications Material: High-speed steel (HSS) with nitride surface Sizes: M3, M4, M5, M6, M8, M10 Shank type: 1/4' hex shank Usage Ideal for tapping, cutting, and forming threads Compatible with tapping machines, such as lathes Increases operational efficiency by allowing drilling and tapping in a single pass