Boring Bar Bars Tool Holder Holders Lot of 13. 1" shank, 1" hole - 2 holders. 0.875" shank, 0.875" hole - 8 holders. The item "Boring Bar Bars Tool Holder Holders Lot of 13" is in sale since Wednesday, January 22, 2020. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Metalworking Equipment\Metalworking Lathes". The seller is "joshua387" and is located in Unionville, Connecticut. This item can be shipped to United States.