Radius 15/32" & Larger are M7 steel.
                    Unit of Measure
                    
               
        
            
                                                                                Units Per Package | 
                                                                        N/A 1 | 
                                                                                Radius | 
                                                                        N/A 5/16" | 
                                                                                Shank Diameter | 
                                                                        N/A 3/4" | 
                                                                                Cutter Diameter | 
                                                                        N/A 1" | 
                                                                                Overall Length | 
                                                                        N/A 3-1/4" |