General Contractor FAQ
What is the function of the hole in an auger bit?
The hole in the flute of the Installer Bits is to hook a wire through to ai... read more
What does the 'Bi-Metal' mean when referring to a utility blade?
The bi-metal terminology refers to how the utility blade is constructed. W... read more
What is the recommended bit speed for flat bits? I am sure that the speed varies by bit diameter and wood species
We have a recommended turning speed of 1500 - 2000 RPM on the IRWIN Speedbo... read more