This is an older style ATS nosepiece and doesn't have the usual markings, see pictures. Spindle Nose Threads: 2-3/16-10 TPI. Drawtube Adapter: M75 x P1.5.Comes exactly as shown in pictures. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Workholding\Chucks\Collet Chucks". The seller is "xpresstoolsinc" and is located in this country: US. This item can be shipped to United States.