Hss M2 Taper Shank Drill Of Size 17.5Mm Long Series As Per Is :8305/1976 Flute Length 165Mm, Overall Length 263Mm. Note: Drilled Hole Dimensions Should Be In Such A Way That While Tapping O Peration Performed In Our Spm Must Meet The Gauging Standard. [ Warranty Period: 30 Months After The Date Of Delivery ] ]