Does the spade bit #88810 fit in the regular bit extensions #88702 that are not Quick-Change.
No, the 88810 (SPEEDBOR2000's) will not fit into the old extensions, 88702 ... Read more
How do I resharpen Irwin auger bits?
First never sharpen the outside edges of the bit that cut--the spur and sid... Read more
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