Ceratizit 7872120617 Indexable Boring Bars; Minimum Bore Diameter (Decimal Inch): 0.7500 ; Minimum Bore Diameter (Inch): 3/4 ; Maximum Bore Depth (Decimal Inch): 0.8300 ; Toolholder Style: SDUCL ; Tool Material: Steel ; Shank Diameter (Decimal Inch):