Bokum BT-4 Boring Bar Tool Post w/ Bushings Machinist Tool Metal Lathe. Be sure to view our other items for more great tooling finds. The item “Bokum BT-4 Boring Bar Tool Post with Bushings Machinist Tool Metal Lathe” is in sale since Monday, December 20, 2021. This item is in the category “Business & Industrial\CNC, […]