[Material]: Made of high speed steel (HSS), high hardness and rust resistance for long life. [6 Sizes Set]: M3 (0, 5mm), M4 (0.7mm), M5 (0.8mm), M6 (1.0mm), M8 (1.25mm), M10(1.5mm). 6 steel drill bits, which perfectly meet your different needs. A sharp, the drill bit induction hardened, resistant to slightly induced wear, to ensure the puncture speed, improve work efficiency. [High Efficiency]: Complete drilling, tapping, deburring and countersinking in one operation, save processing steps and time costs, improve working efficiency. [Application]: Suitable for drilling wood, plastic, thin copper, aluminum and other soft metals (5-6mm), not for hard materials (e.g. sheet metal). steel). [Precautions]: When drilling a hole, you must inject water at the same time to cool the drill bit. If you cannot cool the drill bit when drilling holes, the drilling speed should not be too high, and you should not drill too frequently. Product Description The taps are designed with spiral flutes These taps are designed with spiral flutes spiral and the chip cleaning process would be better. Note The tapping bit can drill, tap , deburring and countersinking in wood, plastic, thin aluminum, copper and other soft metals (5-6 mm), not for hard materials. Features These HSS drill bits and taps are perfect for creating screw threads, cutting or shaping the female part of the torque. They are used on a machine for threading, e.g. B. on a turn. Machine tapping with these taps is faster and generally more accurate because it eliminates human error. Product Specifications Material: High Speed Steel (Titanium Coated) Color: As Pictures Show Hex Shank: 6.35mm (1/4") Standard: Metric Thread: M3, M4, M5, M6, M8, M10 Distance: 0.5mm, 0.7mm, 0.8mm, 1.0mm, 1, 25mm, 1.5mm Used on: machine Function: drilling Quantity: 6