HSS twist drill bit DIN338RN, Cobalt 5%, Fully Ground for professional drilling various steel, metal, alloy, iron, stainless steel, inox, etc.

135degrees split point for durable drilling performance with 5% cobalt up to hardness HRC64-68

Four times of tempering guarantee that professional drilling performance for professionals and industrial applications.

HSS twist drill bit, DIN338RN, Fully Ground type hardened upto HRC64 on HSS M2 material type. For durable drilling various metal, steel, stainless steel, iron, alloy-steel, etc.135 degrees split point for longer drilling life performance.