TECHNICAL SPECIFICATION: Conforms to IS 5101 - 1991 / ISO 235 - 1980 / DIN 338 - 1978 / BS 328 Part 1 - 1986, Material - High Speed Steel, Grade M2 Forged Drill, Diameter Tolerance - h8. HSN CODE: 82075000. NOTE: The Product available in corresponding Metric or Inch specification will be billed and dispatched.