Ceratizit 7871742020 Indexable Boring Bars; Minimum Bore Diameter (Decimal Inch): 1.5300 ; Maximum Bore Depth (Decimal Inch): 3.0000 ; Maximum Bore Depth (Inch): 3 ; Toolholder Style: MWLNL ; Tool Material: Steel ; Shank Diameter (Decimal Inch): 1.25