Reduced Shank Drills expand the size range capacity of a portable drill chuck.00mm Cobalt Drill Bit with 1/2" Reduced Shank, D/ACO Compared to a conventional 118 degree tip, these drills wont go "walking" on you.19. Cobalt drill bits are are effective in drilling tough, high tensile strength materials such as cast iron, inconel, stainless steel and titanium.
â¢Vented climbing helmet â¢Features a short peak and low profileâ¢Mega Ratchet® size adjustment for head sizes 6.1 standardâ¢Goggle retaining slots on suspension.