ThunderTwist SDS+ Drill Bits
from $3.15
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TriCarb* grade tip guarantees longer life with faster penetration due to increased chiseling action.
ThunderTwist® flute design, combined with a copper brazing alloy creates the most reliable drill bit on the market.
Made with the highest quality American chrome-molybdenum-nickel steel available.
Vacuum heat treated, and shot-peened for superior strength under the roughest conditions.