THE HEADS DIAMETERS ARE ALSO A RANGE OF DIFFERENT SIZES FROM 8MM - 14.5MM WIDE. AND THE MOST IMPORTANT NOTE.The item "RDG CARBIDE BORING BAR SET 12MM/9PC BORING HEAD TOOLS" is in sale since Friday, November 23, 2012. This item is in the category "Business, Office & Industrial\CNC, Metalworking & Manufacturing\Metalworking Equipment\Machining Centers & Milling Machines". The seller is "rdg355" and is located in YORKSHIRE. This item can be shipped worldwide.