Ceratizit 7872520617 Indexable Boring Bars; Minimum Bore Diameter (Decimal Inch): 0.5000 ; Minimum Bore Diameter (Inch): 1/2 ; Maximum Bore Depth (Decimal Inch): 1.5000 ; Maximum Bore Depth (Inch): 1-1/2 ; Toolholder Style: STFCL ; Tool Material: Ste