Ceratizit 7870442030 Indexable Boring Bars; Minimum Bore Diameter (Decimal Inch): 1.5300 ; Maximum Bore Depth (Decimal Inch): 3.0000 ; Maximum Bore Depth (Inch): 3 ; Toolholder Style: MCLNR ; Tool Material: Steel ; Shank Diameter (Decimal Inch): 1.25