feature : 1.the grade is special steel alloywith hardness 55+/-1HRC
                                     2.the special-purpose face mill cutter plate uses the hilt
                   catalog number : BT40-FMB22
                                                    BT50-FMB22/ 32
                                                    BT50-FMA 25.4/ 31.75
                
                    brand :   NEXTCUT