Ingersoll Cutting Tools 3604249 Indexable Boring Bars; Minimum Bore Diameter (Decimal Inch): 0.8120 ; Maximum Bore Depth (Decimal Inch): 4.3750 ; Maximum Bore Depth (Inch): 4-3/8 ; Toolholder Style: STFCR ; Tool Material: Solid Carbide ; Shank Diamet