Rockhard Bi-Metal Hole Saws
Rockhard Fine Tooth (10 tpi) Hole Saws
Rockhard Vari- Tooth (4/6 tip) Hole Saws
Rockhard Hole Mandrels and Accessories
Complete Rockhard Catalog (2.4 MEG PDF)
Thread size, -14 to -30 is 1/2" -20 thread,
-32 to -114 have 5/8" - 18 thread.
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