Ingersoll Cutting Tools 6116551 Indexable Boring Bars; Minimum Bore Diameter (Decimal Inch): 1.5000 ; Minimum Bore Diameter (Inch): 1-1/2 ; Maximum Bore Depth (Decimal Inch): 5.0000 ; Maximum Bore Depth (Inch): 5 ; Toolholder Style: HSKNR ; Tool Mate