TECHNICAL SPECIFICATION: Conforms to IS 5101 - 1991 / ISO 235 - 1980 / DIN 338 - 1978 / BS 328 Part 1 - 1986, Material - High Speed Steel, Grade M2 Ground Drill, Bright Finish, Diameter Tolerance - h8, Suitable for drilling of Alloy steel upto 28-35 Hrc / Stainless Steel / Forged Steel / Titanium Alloy / Hastelloy / Inconel and Heat Resistant Steel. HSN CODE: 82075000.