Boring Holder Right Hand Shank Dia 20, Min Bore Dia20, Oal-200 With Insert Dcmt 11 S20R-Sducr 11-20 ,Boring Holder Left Hand Shank Dia 20, Min Bore Dia20. Oal-200 With Insert Dcmt 11 S20R-Sducl 11-20A ,Insert Dcmt 11T308 Mt Tt5080 , Insert Dcmt 11T304-Psfor Steel Machining, Job Hardness 45-50 Hrc Quantity: 110