... , DIN345, DIN1897, DIN8039 Material: M42, M35, M2, HSS9341, HSS4341 HSS Twist Drill Titanium Coatedstraight shankMaterial:HSSStandard:DIN338,DIN340,DIN345,DIN1897,DIN8039Material:M42 ... high tensile strength materials135-degree split point reduces feed pressure for easier penetration without hardening