Ultrafine carbide milling cutters Ultrafine tungsten carbide milling cutters are designed for very fine finishing. They are characterised by efficient stock removal with simultaneously good surface quality. Almost all materials up to a hardness of 65 HRC can be machined. These milling cutters are also optimally suited to applications in which normal grinding points would be suitable, but greater stock removal is required. This product series is frequently used for punching and cutting tools in toolmaking and mould building.