Urma MicroMax Fine Balanceable Boring Head, can be adjusted very accurately at 0.0001 per graduation, and can be precisely balanced to spin vibration free at 20,000 RPM. Mounted on C4U3-0004 toolholder, which is a Cat40 taper shank compatible with many CNC spindles. The item is in great shape, with very minor staining visible on the toolholder that does not effect use.The tool is listed as is with detailed pictures and descriptions to the best of my abilities, please be sure to inspect the images and markings thoroughly before purchasing. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Toolholding\Adapters & Holders\Boring Head & Adapters". The seller is "fabnitup" and is located in this country: US. This item can be shipped to United States.