Supply Of Hss Parallel Shank Drill Bit High Cobalt As Per Is:5101:1991 Chemical Composition Grade Designation- Xt110mo10co8cr4w2co 7.75- 8.75 As Per Is:7291-1981, Size 3.7 Mmd Optimum Drill Bit Tip Type A/d Optimum Flute Angle For Use Drilling Operation On Stainless Steel..