Ingersoll Cutting Tools 6125727 Indexable Boring Bars; Minimum Bore Diameter (Decimal Inch): 1.7500 ; Minimum Bore Diameter (Inch): 1-3/4 ; Maximum Bore Depth (Decimal Inch): 6.0000 ; Maximum Bore Depth (Inch): 6 ; Toolholder Style: HCLNL ; Tool Mate