Taps are designed with spiral flutes and the chip clearing process would be better. Processing: wood, plastic, aluminum, tin alloy, magnesium alloy, workpiece thickness less than 5mm. Hole tapping chamfering in one, easy to operate, hand drill, bench drill, hex chuck tapping machine available. There are total 6 pieces of taps in different sizes from M3 to M10 that you can use for tapping various threads. Specifications: Material: Hex Shank Titanium Plated HSS Screw Thread Metric Tap (short type with Chamfer) Tap Diameter:M3x0.5 mm, M4x0.7 mm, M5x0.8 mm, M6x1.0 mm, M8x1.25 mm, M10x1.5 mm