The Bahco 4415-8.50 is a high-speed steel-rolled (HSS-R) drill bit for metal drilling. It has a diameter of 8.5mm and a length of 117mm and is certified to the DIN 338 standard. The bit is suitable for use on steel, cast iron, non-ferrous metal, copper, aluminium and other construction materials. It is designed with a straight shank to ensure accuracy and stability in the hole, making it great for precision drilling tasks. It also has a three-flatted shank, which reduces slippage in the chuck for improved performance. This drill bit is ideal for use in construction, engineering, automotive and other industrial applications.