(2) Straight w/V Groove for straight OR round tools, 1/4-5/8? This tool post will generally fit lathes from 12? Swing, please check carefully as shown below. Measure from the top of your compound slide, where the tool post sits, to the centerline of the spindle/work piece (Using a center in the tailstock to find this is normally the easiest way) For this BXA Tool Post Set, you will need a minimum of 1-1/4?From that measurement, up to a maximum of about 2? If it is more than this 2? You want to use a larger tool post to fit it properly. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Toolholding\Quick Change Tool Post". The seller is "qualitymachinetools" and is located in this country: US. This item can be shipped to United States, Canada.