... of special material steel we supply all kinds of machine tool parts , Made of special elastic steel material:65Mn Hardness :HRC ... Order NodDLOrder NodDLC42-060M64280JM7132180M184280C42-080M8JM7132200M20C42-100M10JM7132250M25C42-120M12JM7132280M28C42-140M14JM7132300M30C42-160M16JM7132320M32Collet chuck,tool holders,chuck,collet,pull studs,machine tools,ER collet,mill ...