How do I resharpen Speedbor flat bits?
Use a small file to sharpen the top of the cutting edge and inside the spur... read more
I drilled the large hole in my door and have also drilled the small hole, but the small hole does not go all the way back to the large hole. What can I do?
Remove the template from the door and finish drilling out the lock set. read more
IRWIN Lettered and Numbered Drill Bits information:
Letter and numbered drill bits were developed to make up the gaps in betwee... read more