Teledyne?
I would agree with Viscount and this VO BB too. threading a BB is a huge undertaking and labor charges can well exceed the cost of this great BB provided it fits in the shell.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk