Tool holders for
our tool bit grinding jig (GJ-01) come in 5 different sizes:
3/16", 1/4", 5/16", 3/8" and 1/2"
to fit most quality, ground, square modern tool bits!
*We have increased
the capacity of the tool holders by adding the 1/2 inch square
tool bit size which was not available from SBL. In doing so
we increased the overall size of the block and the diameter
of the toolholders by about .19 inch. Thus our model will
NOT interchange with the original*, without turning OD down
on a lathe).