These are for when you need a fast hole in timber.
They are construction tools, NOT woodworking tools, and should NOT be used on a drill press.
Use only with a drill with two handles and two hands on.
We don't have exactly a"set"- more like a collection.
Here's our sizes (in inches):
1", 1-1/4", 1-1/4", 1-3/4", 2"
PNA Tool Lending Library
http://phinneycenter.org/tools/
6615 Dayton Ave Nhttp://phinneycenter.org/tools/
Seattle, WA, 98103
USA