General description The Heller HSS-Co Cobalt Drill Bit 12.5mm is designed for the toughest drilling challenges in stainless steel and metal. Made from a special HSS steel with a 5% cobalt content, this drill bit offers exceptional durability and performance. Technical specifications Material: HSS steel with 5% cobalt Drill Bit Size: 12.5mm Point Angle: 135° Concentricity: Excellent, according to DIN 1414 Dimensional Accuracy: Precision tool as per DIN 338 RN