... , Euroboor, BDS, Ruko.4. Made of high-performance high speed steel., e.g. M2, M2AL, M35, M42 etc. And can ... be used on various materials, like steel plate, Copper, aluminium, cast iron, stainless steel and plastic. 5. The specifications from the ... . The product is mainly used to process the hole of steel component, such as steel structure project, railway traffic, bridging, shipbuilding, machine ...