Boring Head Extension Adaptor 7/8 x 7/8
7/8 male thread x 7/8 female thread
Extended boring depths are possible with the use of these intermediate adaptors .
They can be used independently or in any combination depending on the desired depth of bore.
Even when used in combinations they achieve the same degree of rigidity as a solid bar. This is due to a 1/2 ” degree dish on the shoulder that allows full contact at the perimeter.
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