Two-step cutting action for precise, clean holes in wood drilling applications. Dura-Tip for extreme durability in nail-embedded wood. Dual cutting edge design for effortless, smooth hole drilling in nail-embedded wood. Deep flutes for fast chip removal. 7/16 in. hex quick change shank increases stability and durability in cordless and corded impact wrenches and drill drivers.
The tip broke after a few dozen holes although nothing solid was found. My guess is that the torque applied to the narrow area near the tip is exceeding the yield point and breaking it. It doesn't have to hit a nail to break. There's a reason the return guarantee is only 30 days. The tip is likely to break with prolonged use.