• Manufactured from high quality HSS M35 grade steel 
• 6mm x 139mm
• 5% cobalt mixture added for extra heat resistance
• Clean precise boring with fully ground flute and cutting tip
• 135 degree split point providing easy  non-slip start

6mm x 139mm HSS Cobalt long length Drill Bit made of high quality HSS M35 grade steel with 5% cobalt mixture added for extra heat resistance for tough and hard materials.  With 135 degree split point providing easy non slip start and a fully ground flute and cutting tip for clean precise boring.  Typically used for drilling metal, wood and plastics.