This fits straight onto the cross slide of your lathe machine for Quick Turning of Cones and Balls. Comes with a 1 Indexable TNMG16 Insert for best turning finish and results. The Head can be adjusted for different Ball Sizes. Maximum Ball Diameter possible is 38 mm This existing design is for a perfect fit and direct mounting on a myford lathe machine.However this can even fit to a larger Center Height Lathe machine with some sort of packing to adjust it to the center height of the machine that you are planning to fit it onto. I could manage to find a video from Youtube courtsey dairyNZ. This is not our property. DIY Ball Turning Attachment for Lathes/ Radius Turn Ball up-to 38 mm Diameter. Maximum Ball Diameter possible is 38 mm. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Metalworking Equipment\Metalworking Lathes". The seller is "machinetoolsindia" and is located in this country: IN. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia.