feature :1.  the grade is special steel alloy with hardness 55+/-1HRC
                                     2.two types 
                    catalog number : BT30-FMA1/ 2/ 3
                                                     BT40-FMA1/ 2/ 3/ 4
                                                     BT50 -FMA1/ 2/ 3/ 4/ 5
    
                      brand:          NEXTCUT