Harvey Tool 833641 Chamfer Mills; Cutter Head Diameter (Fractional Inch): 3/8 ; Cutter Head Diameter (Decimal Inch): 0.3750 ; End Type: Corner Chamfer ; Shank Diameter (Decimal Inch): 0.3750 ; Shank Diameter (Inch): 3/8 ; Overall Length (Inch): 2-1/2