The diameter of the construction drill bit can be said to be approximately 0.414 inches.
The diameter of a construction drill bit is said to be 2.3 times larger than that of a normal #15 drill bit.
If the diameter of a #15 drill bit is 0.18 inches, the diameter of a construction drill bit would be:
= Diameter of drill bit x Conversion factor to construction drill bit
= 0.18 x 2.3
= 0.414 inches
We can conclude that the construction drill bit has a diameter of 0.414 inches.
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