Dormer Metric A002 TiN Jobber Drill Bits have a TiN tip coating for increased tool life and performance. It has a self-centring split point for superb hole quality and positional accuracy. It will drill steel stainless cast iron ceramics plastics and many other materials with ease. Made to DIN 338RN/BS328/ISO 235 standards. PLEASE NOTE ALL sizes under 2.0mm are NOT TiN Coated.Tip diameter: 12.50mm.Working length: 101mm.Overall length: 151mm.PTDDOR1250TIN