This Makita Performance Ground Point HSS Drill Bit has a 118° ground point for fast and accurate drilling. The helicoidal flute improves swarf discharge. It's ideal for use on steel, cast iron, aluminium, malleable cast iron, brass and copper. The drill bit conforms to DIN 338 standard. The specifications are as follows: diameter 4.0mm, overall length 75mm, working length 43mm. The pack quantity is 2.