YOUR CHOICE FOR BORING THE REALLY BIG STUFF. This boring head set is excellent for all LARGE size mill drills and larger machines like Bridgeport. It has the classic R 8 arbor with 7/16-20 drawbar threads and 1 1/2  18 threads for the boring head mount.  The arbor is interchangeable with many others like CAT 30, 40, Morse etc. and 5 pieces of 3/4 diameter...

The perfect boring head set for the  cnc mill conversion or 3 in 1 machine and larger. This boring head set is excellent for all medium size mill drills and larger machines like Bridgeport. It has the classic R 8 arbor and 4 pieces of 3/8 diameter INDEXABLE CARBIDE cutters for all boring and facing needs.  Can bore holes from 1/2" up to 5" diameter....

The finest boring head set available for all medium to large sized mills. This boring head set is excellent for all medium size mill drills and larger machines like Bridgeport. It has the Morse 2 arbor with 3/8 16 drawbar threads and 1 1/2-18 threads for the boring head, which makes the head interchangeable to other arbors like R-8. Equipped with 4 pieces...

GREAT BORING HEAD SET FOR LARGER MACHINES This boring head set is excellent for all LARGE size mill drills and larger machines like bridgeport. It has the classic MT 3 arbor with 3/8 16 drawbar threads and the extra heavy 1 1/2 -18  threads for the boring head mounting.  The arbor can be swapped with other common arbors such as R-8 and CAT 30. Comes with...

WOW! What a beautiful high quality set - don't miss this one. This boring head set is excellent for all medium size mill drills and larger machines like bridgeport. It has the classic R 8 arbor and 5 pieces of 1/2 diameter HSS cutters for all boring and facing needs.  Can bore holes from 5/8" up to 6" diameter.  The set comes in a fitted case with a...

WOW- what a fine quality boring head for your mini mill. This is a 1 / 3/4  boring head set with 3 pieces of  high speed steel cutter. The head comes with a Morse taper #2 arbor to fit all mini mills, 3 in 1 machines and drill presses from small to medium size.   The arbors have the standard 7/8- 20 threads, so the boring head can also be used with many...