APT 2-1/2" Body Diam, Manual Offset Boring Head 4" Bore Diam, 1/2 Bar Hole Diam. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Toolholding\Adapters & Holders\Boring Head & Adapters". The seller is "mscindustrialsupplyco" and is located in this country: US. This item can be shipped to United States.