Ceratizit 7872021010 Indexable Boring Bars; Minimum Bore Diameter (Decimal Inch): 1.0000 ; Minimum Bore Diameter (Inch): 1 ; Maximum Bore Depth (Decimal Inch): 1.0600 ; Toolholder Style: SDUCR ; Tool Material: Steel ; Shank Diameter (Decimal Inch): 0