AMERICAN SUN USA Made 740-4A 1" Indexable Boring Bar for Lathe Boring Head 4 Flute These calipers are old stock

These calipers are old stock made in the 50's and left in warehouse storage

We don't polish our carbide cutters as the polishing process is prone to chipping the cutting edge

Claw end gets out staples

"jack of all trades" head patterns for use in the bush: a 2lb Hudson Bay pattern

A useful tool as a permanent fixture or used the ribbed feature for quick adjustment with tool set-up

AMERICAN SUN USA Made 740-4A 1" Indexable Boring Bar for Lathe Boring Head 4 Flute These calipers are old stockAMERICAN SUN USA Model 740 4A 1" Diameter Indexable Boring Bar #WL30. 3American Sun Inc . PA. USA ( a small US firm that made the absolute highest quality tools) . Premium USA Quality.