General description Made of high-speed steel, this 7-piece Spiral Hand Thread Tap set is designed for cutting high-toughness materials. The spiral screw taps feature excellent chip performance and ensure smooth tapping. With seven different sizes, this set meets a variety of threading needs. Technical specifications Material: High-speed steel 6542 Package weight: 0.151 kg Package size: 11.00 x 7.00 x 1.00 cm / 4.33 x 2.76 x 0.39 inch Sizes and diameters: M3: 0.5mm M5: 0.8mm M6: 1.0mm M8: 1.25mm M10: 1.5mm M12: 1.75mm Other information