Ceratizit 7871641626 Indexable Boring Bars; Minimum Bore Diameter (Decimal Inch): 1.2800 ; Maximum Bore Depth (Decimal Inch): 4.0000 ; Maximum Bore Depth (Inch): 4 ; Toolholder Style: MWLNR ; Tool Material: Steel ; Shank Diameter (Decimal Inch): 1.00