ALPEN HSS FORTE COBALT DRILL BIT 12MM ALP18312Alpen HSS FORTE COBALT DRILL BITS Size: 12. 0 x 151 101 mm Packaged: Qty 1 Range of application: 5% cobalt alloyed jobber drills with an extremely sturdy construction (re inforced web) for drilling under difficult conditions e. g. poor chipremoval and deep holes, for use in steel and cast iron with tensile strength up to 1. 300 N mm . Strengths Self centering Special point shape Harder Nitro oxidised chamfer Big chip spaces (6 to 8 x D) Faster by