... super tough high speed steel e.g. M2, M2AL, M35, M42, ASP2030 etc 3.with multi-cut geometry ... -cutting and lower fr drill1. Weldon shank, with more stable clamping for stable cutting and finish ... and press, like Alfra, Hougen, Jancy, Euroboor, BDS, Ruko.4. Made of high-performance high speed steel., ... lengthened. It is stable made and can cut with high speed, and make the surface of materials smooth. ...