DIN TAP T215 Spiral Flute, Metric, R15, Ti, TiCN. For Titanium based alloys. For duplex and super duplex stainless steels. For Nickel based alloys >850N/mm2 <1150N/mm2. Tight tolerances and optimised microfinish For optimal process reliability and excellent thread quality. Blind holes up to approx. 1.5 x d1.