These professional-quality, diamond, drill bits are designed for use in drilling asphalt and concrete. They have a total segment height of .320" (8.128mm), a diamond depth of .250" (6.350mm) and a segment base of .070 (1.778mm). The standard bit length is 13" (330.200mm) and the integral thread adapter is 1.25"– 7 thread.
Concrete drill bits are for critically hard concrete with heavy, steel reinforcement.
Asphalt drill bits are for asphalt and concrete with soft, abrasive aggregate.
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