The high-volume, double-helix design of the quad-head bit comes with the patented, high-performance, reinforced core flute to maximize energy transfer. 4 x 90° head geometry crushes through rebar and prevents sticking in reinforced concreteĪll the features of single cutter bits and the quad-head dual-cutter are designed to improve durability and drilling speed.Patented, high-volume, multi-flute spiral quickly channels concrete dust from the hole to improve drilling speed.Chisel-shaped drill-bit head penetrates the material and directs concrete dust into the multi-flute spiral.Drill bits conform to ANSI Standard B212.15.
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