Hss Taper Shank Twist Drill, Size: 23.50Mm Dia. Specification: Is-7291-1981,Grade:M-42, Flute Length -160Mm,Over All Length-281Mm.As Per Is -7291-1981(4-5) Micron Of Titanium Aluminium Nitra Te Coating. Make: Miranda/It/Addison Or Similar. [ Warranty Period: 30 Months After The Date Of Delivery ] ]